IGCSE Edexcel Chemistry Practice Test

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• Which statement is true about nitrate salts and ammonium salts?
• During the thermal decomposition of copper(II) carbonate, which gas is released?
• What best describes covalent bonding in simple terms?
• What type of reaction occurs in CH4 + 2O2 → CO2 + 2H2O?
• Which gas is the least abundant among the four major components of dry air?
• Which set of gases are the four most abundant in dry air?
• Which statement about cracking is true?
• Phenolphthalein in alkaline solution is which color?
• What are the products when methane reacts with chlorine under UV light?
• Sodium nitrate is ...
• In a weak acid, the color of universal indicator is which?
• The period number represents what property?
• Name this molecule: CH3CH2CH2CH3
• Name this molecule: C3H7COOH.
• In a homologous series, successive members differ by which unit?
• Which statement about boiling points of alkanes is correct?
• What defines an isomer?
• Which observation confirms the presence of oxygen gas?
• pH 5 corresponds to which type of solution?
• Mixtures have a ... melting and boiling points.
• Which element is essential for iron to rust?
• What is the formula of the sulphate ion?
• During combustion of hydrocarbons that contain sulfur impurities, which sulfur oxide is formed?
• What is the name of the reaction for CuCO3 -> CuO + CO2?
• Carbon Dioxide, Water Vapour and Methane are known as which type of gases?
• What are the products of complete combustion of hydrocarbons?
• Which gas is produced in the reactions of Group 1 metals with water?
• In a solution, the substance that is dissolved in another is called the
• Which process is solid turning directly into gas?
• What is a functional group?
• Which of the following is a greenhouse gas?
• Which molecule contains a hydroxyl group?
• Why do molecules have low melting points?
• What does the atomic number represent?
• Name this molecule: C4H9OH.
• Which ion is present if a blue-green flame is observed?
• Deposition is the change from which state to which?
• After diesel in the sequence, which product is collected?
• Which of the following oxide gases are linked to acid rain according to the material?
• Which of the following lists all the giant covalent structures named in the material?
• Which test can distinguish between an alkane and an alkene?
• Which option is the chloride ion?
• When carbonate reacts with an acid, the products include which of the following?
• Which chemical formula represents hydrated copper(II) sulfate?
• What is the color of fluorine gas?
• Which ion is indicated by a green precipitate formed when sodium hydroxide is added?
• Predict the state of astatine at room temperature?
• What is the name of the reaction when an acid reacts with an alkali?
• Which flame color indicates the presence of potassium ions?
• What is the formula of rust?
• What is the chemical equation for the thermal decomposition of calcium carbonate?
• Chloride salts are soluble, except which of the following?
• What is the molecular formula of methane?
• Which of the following is an alkene?
• If the temperature increases during a process, the reaction is
• What are the products when potassium reacts with water?
• If an oxide is basic, which type of element forms it?
• Which observation is reported when rubidium reacts with water?
• Which term describes a substance made of atoms of two or more different elements that are chemically combined?
• Which statement best explains why increasing concentration increases the rate of reaction?
• Which indicator shows pink in alkaline solution and colorless in acidic solution?
• What is the formula of the ammonium ion?
• Water of crystallisation is...
• What does the symbol ⇌ mean in a chemical equation?
• Name this branched-chain alkane with the formula C5H12.
• What is the formula of the iodide ion?
• NH4Cl ⇌ NH3 + HCl. What is the name and colour of the reactant?
• Which gas is flammable and gives a squeaky pop when lit?
• What is the formula of Ammonium Chloride?
• In complete combustion, which two substances are primarily formed?
• Which temperature does pure water freeze at under standard conditions?
• A cream precipitate is formed when silver nitrate is added. Which ion does this indicate the presence of?
• Compared to lighter fractions, heavier fractions generally exhibit which of the following properties?
• Which factor allows nitrogen and oxygen to react in car engines?
• Which process is gas turning directly into solid?
• Does molten lead bromide conduct electricity?
• Which gas color is Orange?
• In the same sequence, which product comes after gasoline?
• What type of reaction occurs when C3H6 reacts with Br2 to form C3H6Br2?
• Which statement describes the empirical formula?
• Which ion contains both nitrogen and oxygen?
• Which reagent confirms sulfate ions, and what is the precipitate?
• Which statement describes isotopes?
• Magnesium hydroxide has which solubility in water?
• Which statement best describes hydrated salts?
• Which gas is released when calcium carbonate is heated?
• What is the chemical formula of iodine as a diatomic molecule?
• Which statement about fluorine is correct based on the material?
• The group number represents what property?
• Which color indicates a weak acid on universal indicator?
• Name this molecule: CH3 CH CH CH2 CH3.
• What is the general formula for alkanes?
• Bleaching damp litmus paper indicates the presence of which gas?
• Fractional distillation is used to separate mixtures with similar boiling points because it uses a fractionating column to provide repeated vaporization and condensation.
• Adding acid produces a gas that turns limewater milky. Which ion is present?
• Which process is used to separate crude oil into components?
• What is the formula of Barium Chloride?
• Bromine forms which ion?
• Phenolphthalein in acidic solution is which color?
• In the given definitions, what role does an acid play?
• Which ion is indicated by a blue-green flame?
• What color does universal indicator show at pH 9?
• What is the relative mass of an electron?
• What is the term for the temperature at which a liquid changes to a gas?
• Which of the following contains the sulfate ion?
• Propene plus bromine water yields which product?
• What percentage of nitrogen is present in dry air?
• What is the formula of Iron (III) oxide?
• In the forward reaction NH4Cl ⇌ NH3 + HCl, which gases are produced?
• Which is the chemical symbol for bromine gas?
• Metals are located on which side of the periodic table?
• Which type of reaction is C5H10 + 5O2 → 5CO + 5H2O?
• Which formula represents a nitrate salt of an alkali metal?
• A 100 g block with a specific heat capacity of 0.5 J/g°C experiences a temperature rise of 20°C. How much heat energy is transferred?
• What is the formula of nitric acid?
• A crude oil fraction refers to a group of hydrocarbons with what characteristic?
• Which factor speeds up rusting?
• Relative atomic mass uses which standard for comparison?
• Name an environmental problem related to sulphur oxides.
• During the carbonate test, the gas turns limewater cloudy. What gas caused this change?
• What are the products of the thermal decomposition of copper(II) carbonate?
• Which metal is more reactive, silver or gold?
• What color change would you observe in the dehydration of copper(II) sulfate pentahydrate?
• Salts containing ammonium have what solubility in water?
• In the test for water, what observation indicates water is present when using anhydrous copper sulfate?
• Are alkanes saturated or unsaturated?
• Which compound is a lead compound?
• Which of the following is predicted to be a gas at room temperature?
• Do ionic compounds conduct electricity when solid?
• Which is the correct formula for potassium carbonate?
• A negative ion is formed by the...
• Which two subatomic particles have the same relative mass?
• Which unit is used for molar mass?
• What is the color of bromine liquid?
• Which molecule contains a carboxyl group?
• Which process is gas turning into liquid?
• The flame color observed for K+ in a flame test is which color?
• An atom has 2 protons and 2 neutrons. Its mass number is?
• What is the main purpose of fractional distillation in oil refining?
• What is the relative mass of a neutron?
• Why is water a liquid at room temperature?
• A hydrocarbon contains carbon and hydrogen only. Which statement is true?
• C2H6 + Cl2 → C2H5Cl + HCl is an example of which reaction type?
• A flame test requires a wire made of which material?
• Which ion has a 1- charge?
• In a homologous series, which property tends to change gradually as the chain length increases?
• Do ionic compounds conduct electricity when dissolved in water?
• Which separation technique is used to separate a solid from a liquid?
• Describe the arrangement, movement and energy of particles in a solid.
• What is the chemical formula of Copper Sulphate?
• The electrical conductivity of graphite is due to electrons that are:
• Which term describes an element?
• Combustion is the reaction with which element?
• What color does universal indicator show at pH 14?
• Which molecule is an alcohol among the following?
• What is the formula of the nitrate ion?
• Which flame color indicates the presence of lithium ions?
• What is the chemical formula for iodine gas?
• Which side of the periodic table is associated with non-metals?
• Which ion is present if an orange-red flame is observed?
• A chromatogram that shows only one peak indicates the sample is:
• Test for ammonia gas which observation is expected?
• Pure substances have a ... melting and boiling point.
• What is the mass number?
• What are the products when copper(II) carbonate reacts with nitric acid?
• Oxides of metals are what kind of oxides?
• Oxidation involves which of the following?
• Which structural feature explains graphite's conductivity?
• Why does increasing temperature increase the rate of a reaction?
• Heat up a liquid and it becomes a ...?
• What would you expect about diamond's electrical conductivity?
• Which four metals are not reactive enough to react with acids?
• During boiling, what happens to a liquid?
• What is the charge on the ammonium ion?
• Which halogen is most reactive?
• What are the products of neutralizing an acid with a hydroxide?
• When methane reacts with chlorine under UV light, what is the major product?
• What happens to the boiling point of crude oil fractions as you go down the distillation column?
• A white precipitate forms with barium chloride. This indicates the presence of which ion?
• What is the formula of Lithium Hydroxide?
• Which indicator is pink in alkaline conditions?
• Name an environmental problem related to nitrogen oxides.
• What gas is produced when copper(II) carbonate reacts with nitric acid?
• An exothermic process involves which heat flow?
• How many electrons are in the outer electron shell of group 1 elements?
• Which statement best defines a homologous series?
• How does adding a catalyst increase the rate of reaction?
• What class of compound is C2H5COOH?
• A reaction that warms the surroundings is described as
• During freezing, what happens to a liquid?
• What conditions are needed for iron to rust?
• Electrons are found in which part of the atom?
• What is the color of bromine liquid?
• Does aqueous sodium chloride conduct electricity?
• pH 12 corresponds to which type of solution?
• Test for oxygen gas which observation is expected?
• Why can graphite conduct electricity?
• Elements in the same group share what kind of properties?
• Which metal is more reactive, magnesium or lithium?
• Sublimation is the change from which state to which?
• What is the colour of iodine solid?
• Fractions from crude oil are defined as hydrocarbons separated by what property?
• If a chromatogram has more than one peak it indicates the sample is a:
• What color does universal indicator show at pH 3?
• When Group 1 metals react, do they gain or lose electrons?
• Which hydroxide is formed when lithium reacts with water?
• Which formula corresponds to Propane?
• Which term describes replacing a hydrogen atom with a halogen in a hydrocarbon, as in CH4 + Cl2 → CH3Cl + HCl?
• Chloride salts are soluble except which of the following?
• If you move up the distillation column, the color of the fractions tends to become lighter. Which option best describes this trend?
• Which ion forms a green precipitate with sodium hydroxide?
• What is the combined percentage of nitrogen and oxygen in dry air?
• What color is universal indicator in a strong alkali?
• What happens to the boiling point of crude oil fractions as you go up the distillation column?
• Does solid lead bromide conduct electricity?
• Which fraction is collected last in the fractional distillation of crude oil?
• What are the products when magnesium reacts with sulfuric acid?
• Why is ammonia a gas at room temperature?
• Which metal among aluminium, iron, copper, zinc is the least reactive?
• Which statement best matches pale yellow gas in the data set?
• Which statement describes reduction?
• Barium sulfate is ...
• What is the colour of the precipitate when copper(II) ions react with sodium hydroxide?
• Which process is liquid turning into gas?
• Methyl orange in a basic solution is which color?
• State of chlorine at room temperature?
• Which statement correctly describes the reactivity of copper with sulfuric acid in the given data?
• Why does graphite have a high melting point?
• Name the type of reaction: C2H4 + H2O ---> C2H5OH
• Which ion does zinc form?
• What is the equation for heat energy change?
• Which ion does lead commonly form in compounds?
• Which statement best defines an unsaturated hydrocarbon?
• What percentage of oxygen is present in dry air?
• What is the name of HCl?
• What is the relative charge of a proton?
• Are salts containing potassium soluble or insoluble?
• Which of the following is a Group 1 metal?
• Increasing concentration of solutions affects the rate of reaction by which effect?
• How many hydrogen atoms does ethene (C2H4) contain?
• Simple molecular structures have what kind of melting and boiling points?
• Which halogen can displace chloride ions (Cl-)?
• Cracking converts long-chain alkanes into shorter-chain alkanes and what other type of hydrocarbon?
• The horizontal rows on the periodic table are called?
• Among the listed fractions, which has the lowest boiling point?
• Which observation describes potassium reacting with water?
• What is the name of the compound K2CO3?
• What gas is produced when magnesium reacts with sulfuric acid?
• Which statement correctly describes the oxidising agent?
• Which of the following is a barrier method to prevent rust on iron?
• Name this molecule: C2H5OH
• What is the charge on the carbonate ion?
• When an oxide reacts with an acid, the products are which of the following?
• State of bromine at room temperature?
• What is the reason graphite conducts electricity while diamond does not?
• Solvent is defined as which of the following?
• Which ion forms a white precipitate with silver nitrate?
• What is the initial color of bromine water before it reacts with an alkene?
• Which of the following is the correct molecular formula for butene?
• Test for chlorine gas which observation is expected?
• Which environmental issue is primarily associated with carbon dioxide?
• If damp red litmus paper turns blue, which gas is present?
• Name the molecule CH4.
• What conditions are used for cracking?
• Name this molecule: CH3 CH CH CH3.
• Neutrons are found in which part of the atom?
• Increasing pressure of reacting gases affects the rate of reaction by which effect?
• Why does increasing pressure increase the rate of reaction?
• If an atom has 6 protons and 6 neutrons, what are its atomic number and mass number?
• What are the products when ethane reacts with chlorine under UV light?
• Which of the following is an example of a mixture with a range of melting points?
• What type of reaction is C2H4 + 3O2 → 2CO2 + 2H2O?
• What does the mole measure?
• Which statement best describes the general products of a reaction between any Group 1 metal and water?
• What percentage of carbon dioxide is present in dry air?
• Which of the following is not a fraction obtained from fractional distillation of crude oil?
• Nitrate salts are ...?
• Which sequence lists alkanes in increasing number of carbon atoms?
• What is the colour of bromine water?
• Predict the colour of astatine solid?
• What are the products of the thermal decomposition of calcium carbonate?
• What is the formula of Aluminium Sulphate?
• Which ion could be the nitrate ion?
• What is the formula of Potassium Nitrate?
• What is the relative charge of an electron?
• What is relative atomic mass?
• In the equilibrium H2O(l) ⇌ H2O(g) ΔH = +41 kJmol-1, what is the sign of ΔH for the forward direction?
• In a flame test, which colour indicates copper(II) ions (Cu2+)?
• What temperature is used for cracking as stated in the material?
• Which statement correctly identifies a diatomic halogen molecule?
• Which reagent would you use to test for sulfate ions by forming a white precipitate?
• Zinc coating on iron provides protection by
• What is the formula of the carbonate ion?
• Which metal in the list reacts explosively with water?
• Iodine forms which ion?
• Solute is defined as which of the following?
• Which product is collected after fuel oil in the sequence?
• The flame color observed for Na+ in a flame test is which color?
• Treating ammonium ions with sodium hydroxide produces a gas that turns damp red litmus blue. What gas is produced?
• Which statement about the reaction mechanism of alkanes with halogens under UV light is true?
• What is the formula of Zinc Nitrate?
• What is the name given to the elements in Group 1 of the periodic table?
• Litmus in an acidic solution appears as which color?
• Silver forms which ion?
• Hydroxides are insoluble except which cations?
• What is the color of chlorine gas?
• Name the molecule C3H8.
• Aluminium forms which ion?
• What is the reverse of endothermic?
• An atom with atomic number 8 has how many protons?
• Why does diamond have a high melting point?
• Which statement about ethene is correct regarding its carbon–carbon bonds?
• What is the chemical symbol for chlorine gas?
• Name this molecule: CH3COOH
• Name this straight-chain alkane with the formula C6H14.
• Which observation helps distinguish iron(II) from iron(III) when reacting with sodium hydroxide?
• Hydroxides are insoluble in water except when paired with which cation?
• What is the general formula for alkenes?
• Which reagent is used to test for bromide ions, and what is the appearance of the precipitate?
• In graphite, electrons are free to move within the layers but not between layers. Which option is true?
• Name this molecule: C3H6
• A positive ion is formed by the...
• Diamond has a three-dimensional covalent network that prevents electrons from moving freely. Which of the following is true about this statement?
• Which type of bonding exists in diamond?
• The flame color observed for Li+ in a flame test is which color?
• Which gas in dry air has the chemical symbol Ar?
• Which statement best describes an element?
• Which direction, forwards or reverse, is exothermic for N2 + 3H2 ⇌ 2NH3 ΔH = -92 kJmol-1?
• Which factor does not affect the rate of a reaction?
• Which product besides a salt is produced when carbonate reacts with acid?
• Litmus in an alkaline solution appears as which color?
• If you double the concentration of a solution while keeping volume and temperature the same, what happens to the rate?
• Cracking produces a shorter alkane and an alkene. Which of the following is the alkene?
• Which compound contains the carbonate ion?
• Which ion is described as the alkali ion in the material?
• Which option is the iodide ion?
• Which of the following is a disadvantage of burning polymers?
• In the sequence of products produced by fractional distillation, which comes immediately after refinery gases?
• What are the products when propane reacts with chlorine under UV light?
• Which ion is produced by alkalis in solution?
• What is the term for a solute dissolved in a solvent?
• Which general equation describes the reaction of a metal with an acid?
• C3H8 + 2O2 → 3C + 4H2O is an example of which reaction type?
• A reaction that cools the surroundings is described as
• A saturated solution is defined as
• Where are fractions with higher boiling points located in the distillation column?
• What color is anhydrous copper(II) sulfate, CuSO4?
• What color is universal indicator in a neutral solution?
• Why do ionic compounds have high melting and boiling points?
• Which giant covalent structure conducts electricity?
• What is the chemical formula for chlorine gas?
• Test for hydrogen gas which observation is expected?
• Which elements are found in a hydrocarbon?
• Which ion forms a blue precipitate when sodium hydroxide is added?
• What is the name of NH4OH?
• Which ion is described as the acid ion in the material?
• Name this molecule: CH3CH2CH3
• Name this molecule: CH3CH(CH3)CH3
• Under incomplete combustion with limited oxygen, which products are typically formed?
• Which metal is more reactive, Potassium or Calcium?
• Are salts containing lithium soluble or insoluble?
• A negative ΔH value indicates what about the forward reaction?
• Which term describes two or more substances that are not chemically bonded?
• What is a catalyst?
• A redox reaction involves which of the following?
• What are the products when methane reacts with chlorine under UV light?
• Which chemical test is used to detect the presence of a C=C double bond in alkenes?
• Non-metals are located on which side of the periodic table?
• Name this molecule: C3H7OH
• Which catalysts are used in cracking according to the material?
• What color is universal indicator in a weak alkali?
• What is the name of Fe(NO3)2?
• Which category conducts electricity in solid form?
• In a flame test, which colour indicates the presence of calcium ions (Ca2+)?
• A molecule is defined as:
• A flame test uses which type of flame?
• Which ion is produced by acids in solution?
• What percentage of argon is present in dry air?
• What is the equation for molar enthalpy change?
• Which hydroxide is formed when potassium reacts with water?
• Which observation would indicate sulfate ions when BaCl2 is used?
• Define ionic bonding.
• Sulfate salts are soluble, except which of the following?
• Cool down a liquid and it becomes a ...?
• Which name corresponds to the straight-chain hydrocarbon with five carbon atoms?
• Which statement is true about simple molecular substances?
• Cracking produces a shorter chain alkane and which other product?
• When a hydroxide reacts with an acid, the products are which of the following?
• Which element forms a 3+ ion?
• Why do longer hydrocarbon chains have higher boiling points than shorter hydrocarbon chains?
• What are the products when lithium reacts with water?
• Which statement is true about salts of alkali metals potassium, sodium, and lithium?
• What is the relative mass of a proton?
• Which statement about sodium chloride is true?
• Increasing the temperature affects the rate of reaction by which effect?
• Which property is shared by Diamond, Graphite, and Silicon Dioxide?
• Which name refers to the branched-chain alkane with formula C4H10?
• What color change does bromine water undergo when an alkene is present?
• Name this molecule: C4H8.
• Methyl orange in an acidic solution is which color?
• Which ion is present if you add acid and observe gas that turns limewater milky?
• Which ion has the formula SO4 2-?
• If an atom has 9 protons and 4 neutrons, what is its mass number?
• What type of bond exists between carbon atoms in alkanes?
• In a solution, the substance that dissolves the other substance is called the?
• What is the chemical formula for bromine gas?
• Complete combustion of an alkane produces which products?
• A orange-brown precipitate forms when sodium hydroxide is added. Which ion is present?
• Which ion produces an orange-brown precipitate with sodium hydroxide?
• Which would react faster? 1.0M HCl or 2.0M HCl?
• Which gas is released when a carbonate reacts with an acid?
• What is the functional group of alkenes?
• Which statement best explains why Graphite conducts electricity among giant covalent structures?
• The number of electron shells is indicated by which periodic number?
• Which observation is NOT seen when lithium reacts with water?
• If an oxide is acidic, which type forms it?
• What is the name of the compound Na2SO4?
• Which of the following is the straight-chain isomer of C4H10?
• Potassium chloride has which solubility in water?
• In Group 1 elements, how does reactivity change as you go down the group?
• What is the polymer made from chloroethene called?
• An endothermic process involves which heat flow?
• CH4 + Cl2 → CH3Cl + HCl is an example of which reaction type?
• Copper sulfate pentahydrate contains how many water molecules per formula unit?
• What is the observed result of the reaction between copper and sulfuric acid?
• Condensation involves which change of state?
• Which technique is used to separate substances with large differences in boiling point, such as water and a soluble salt?
• During fractional distillation, which property is primarily used to separate fractions?
• What is the product of combustion of hydrogen?
• Which hydroxide is formed when sodium reacts with water?
• What is the initial colour of the precipitate formed when iron(II) ions react with sodium hydroxide?
• Which compound corresponds to methylpropene?
• After kerosene in the sequence, which product is collected?
• Which ion forms a yellow precipitate with silver nitrate?
• What is the molecular formula of propene?
• Powder reactants react faster than lumps.
• What is the formula of Silver Bromide?
• What is the IUPAC name of the molecule with formula C2H5COOH?
• Melting is the process that changes a solid to which state?
• Arrange the metals Potassium, Lithium, Sodium in order of increasing reactivity.
• Which condition leads to incomplete combustion?
• Which gas is released when carbonate reacts with acid?
• The group number corresponds to the number of what in main-group elements?
• What is the formula of Lead Sulphide?
• Which of the following is an alkene?
• If heat is taken in by a process, the process is described as
• What is the general formula for alkanes?
• Alkalis are bases that are dissolved in water. Which of the following is true?
• Which product is collected at the bottom of the fractional column during the fractional distillation of crude oil?
• Describe the arrangement, movement and energy of particles in a solid.
• Diffusion is defined as which of the following?
• Which describes iodine in solid form?
• In which part of the atom are electrons primarily located?
• Oxidation is the process of
• Which ion forms a blue precipitate with sodium hydroxide?
• What is the chemical formula for bromide ion?
• Oxides of non-metals are what kind of oxides?
• What is the required condition for the chlorination of methane?
• Name this molecule: C2H4
• Which reagent would you use to test for bromide ions by forming a cream precipitate?
• Molecules have low melting points because they have which are easy to break?
• Which gas relights a glowing splint?
• Polychloroethene is commonly abbreviated as which acronym?
• What is the colour of the precipitate produced by iron(III) ions on reaction with sodium hydroxide?
• How are elements arranged on the periodic table?
• What is the polymer made from ethene called?
• What is a covalent bond?
• Which color describes the solid form of iodine?
• Which ion does magnesium form?
• Which gas turns limewater cloudy?
• If universal indicator shows red, the solution is?
• Name the type of reaction: A + B -----> C
• In Group 7, reactivity increases as you move in which direction?
• How does viscosity change as you go down the distillation column?
• What is the color of bromine gas?
• Describe the arrangement, movement and energy of particles in a liquid.
• Ethene plus bromine water yields which product?
• If universal indicator shows blue, the solution is categorized as?
• Which formula is a chloride compound?
• Why is cracking important in industry?
• What is the smallest particle of an element?
• What ion does hydrogen form in aqueous solution?
• What is a saturated hydrocarbon?
• Which salt is formed when potassium hydroxide reacts with hydrochloric acid?
• What is the formula of Calcium Hydroxide?
• Which ion does lithium form?
• Which gas is the most abundant in dry air?
• What is the product of combustion of magnesium?
• What is the charge on a nitrate ion?
• How many electrons are in the outer shell of group 7?
• Which pair are structural isomers?
• Are salts containing sodium soluble or insoluble?
• Which term describes a group of atoms bonded together?
• If a material conducts electricity due to delocalized electrons, which property is likely enhanced?
• Which option correctly lists the order of fractions from top to bottom of the fractional column?
• Which side of the periodic table is associated with metals?
• What color does universal indicator show at pH 5?
• pH 2 corresponds to which type of solution?
• Crude oil is best described as which of the following?
• Which color represents a neutral solution on universal indicator?
• Which would have the fastest initial rate of reaction?
• Which solid at room temperature has a color described as black?
• Which temperature does pure water boil at under standard conditions?
• If heat is given out by a process, the process is described as
• Which statement best explains why ionic compounds conduct electricity when melted or dissolved but not when solid?
• Do ionic compounds conduct electricity when molten?
• Which statement correctly pairs the sign of ΔH with the type of process?
• Calcium forms which ion?
• If the temperature decreases during a process, the reaction is
• Which metal is more reactive, zinc or sodium?
• Which is the straight-chain alkane with formula C4H10?
• What is the reverse of exothermic?
• Protons are found in which part of the atom?
• Which color indicates a strong alkali on universal indicator?
• In a redox reaction, the reducing agent is which of the following?
• Why does silicon dioxide have a high boiling point?
• Why are noble gases unreactive?
• Lead bromide conducts electricity when molten but not when solid.
• What is the name of Group 7 elements?
• Carbonates are insoluble in water except when paired with which cation?
• Which flame color indicates the presence of sodium ions?
• In the carbonate test, which gas is produced when acid is added?
• What is the formula of the hydroxide ion?
• Which metal is more reactive, aluminium or iron?
• What is the relative charge of a neutron?
• State of iodine at room temperature?
• Which equation correctly relates mass, moles, and molar mass?
• Copper forms which ion?
• When Group 7 elements react, do they gain or lose electrons?
• Which polymer's name is derived from ethene?
• The combustion of sulfur in air yields which gas?
• What is the polymer made from propene called?
• A negative enthalpy change (ΔH = -20 kJ/mol) indicates the process is
• If an alkene has five carbon atoms, what is its formula?
• Graphite's electrical conductivity arises primarily from electrons that are delocalized within the carbon layers. Which statement is true?
• Which formula corresponds to Iron (II) Nitrate?
• Which ion has the symbol Zn2+?
• Rusting can be prevented by covering iron in zinc; this method is called
• In the given definitions, what role does a base play?
• Which statement is correct about salts containing ammonium?
• Which product is commonly used as a fuel for cars?
• The molar mass is defined as...
• Which gas from the combustion of hydrocarbons is poisonous?
• A yellow precipitate forms when silver nitrate is added. Which ion is present?
• Which direction of the reaction is exothermic?
• If Q = 2000 J released in a reaction involving 1 mole, what is ΔH?
• Which pair represents typical products of incomplete combustion of hydrocarbons?
• What is the name of the reaction when an acid reacts with an alkali?
• What is the name of C3H7COOH?
• Which technique is used to separate substances with similar boiling points, such as Ethanol and Water?
• Which of the following is the ammonium ion?
• If Q = -1500 J and n = 0.5 mol, what is ΔH?
• Which salt is formed when copper(II) oxide reacts with sulfuric acid?
• What is the chemical formula of chloride ion?
• Which statement describes graphite's bonding arrangement?
• What color does universal indicator show in a strong acid?
• What is the colour of iodine gas?
• How does the colour of the crude oil fractions change as you go down the distillation column?
• What is the formula for ammonium hydroxide?
• What is the chemical formula for bromine water in solution?
• Which statement defines a polymer?
• Lead bromide is ...
• Ionic bonds are typically described as
• Potassium forms which ion?
• Which statement about water of crystallisation is true?
• A white precipitate forms when silver nitrate is added. Which ion is present?
• Which observation confirms the presence of carbon dioxide gas?
• Which property would you expect for a material with a three-dimensional covalent network and no free electrons?
• Molecules which have larger molecular masses have ______ melting points.
• Increasing the surface area of a solid affects the rate of a reaction by which effect?
• Which gas is the third most abundant in dry air?
• Which statement is true about alkanes and alkenes in terms of saturation?
• Which gas color is Green?
• Are salts containing potassium, sodium, and lithium soluble in water according to the material?
• Which formula represents Ethene?
• Among the listed fractions, which has the highest boiling point?
• What is the chemical name of rust?
• Which gas turns damp red litmus paper blue?
• Which statement correctly contrasts diamond and graphite in terms of conductivity?
• Chlorine forms which ion?
• Name this molecule: CH2=CH-CH2-CH3.
• Does diamond conduct electricity?
• During the combustion of phosphorus in air, the air volume decreases from 200.0 cm3 to 158.2 cm3. What is the percentage of oxygen in the air?
• What are the products when ethane reacts with chlorine under UV light?
• Which particle is located in the nucleus along with neutrons?
• Which option represents the oxide ion?
• What is the term for a reaction in which a compound breaks down into simpler substances when heated?
• Name the molecule C2H6.
• What is the chemical formula for iodide ion?
• Which statement describes the forward direction of H2O(l) ⇌ H2O(g) in terms of heat?
• Which of the following is a branched alkane?
• Most alkanes are insoluble in water because they are what?
• The substance oxidised is called the which agent?
• Ammonium carbonate has which solubility in water?
• Magnesium hydroxide is classified as which in water?
• What is the charge on a sulfate ion?
• What is the formula of sulfuric acid?
• Monomer is defined as which of the following?
• Which statement describes the molecular formula?
• Silver iodide is ...
• Covalent bonds involve the overlap of what?
• Which ion is identified by forming a white precipitate with acidified barium chloride solution?
• Which compound has the formula C2H4?
• What is the formula of magnesium oxide?
• Polymers disposed in landfill are typically described as which property?
• Predict the state of fluorine at room temperature?
• pH 7 corresponds to which type of solution?
• Viscosity is a measure of what property?
• Which is a correct general name for the molecule with formula C4H8?
• Which product is collected at the top of the fractional column during the fractional distillation of crude oil?
• In the complete combustion of methane, what are the main products?
• Diffusion describes which of the following?
• Which name corresponds to the straight-chain alkane with five carbons?
• What primarily gives giant covalent structures their high melting/boiling points?
• Name this molecule: CH2 CH CH2 CH2 CH3.
• Which ion has the symbol Pb2+?
• What are the products when sodium reacts with water?
• Which halide ion forms a yellow precipitate with silver nitrate?
• Fluorine forms which ion?
• Which of the following is a monomer?
• Which coating is widely used to protect iron from rust in outdoor structures?
• Why does increasing surface area increase rate of reaction?
• Which formula represents a hydroxide of an alkali metal?
• Name the giant covalent structures.
• Which equation correctly represents the dehydration of hydrated copper(II) sulfate?
• Which halide ion yields a cream precipitate with silver nitrate?
• Which would produce the most gas when reacted with an excess mass of carbonate?
• Oxygen forms which ion?
• What makes carbon monoxide poisonous?
• Which option is the fluoride ion?
• What are the products when potassium hydroxide reacts with hydrochloric acid?
• What color change occurs when copper(II) carbonate is heated to form copper(II) oxide and carbon dioxide?
• What is a fuel?
• What are the vertical columns on the periodic table called?
• Which statement best describes the nature of giant covalent structures?
• What is the charge on a halide ion?
• In a redox reaction, an oxidising agent is which of the following?
• Which reagent is used to test for chloride ions, and what is the appearance of the precipitate?
• A positive enthalpy change (ΔH = +20 kJ/mol) indicates the process is
• Test for carbon dioxide which observation is expected?
• pH 9 corresponds to which type of solution?