ExpertAQA GCSE
AQA GCSE Chemistry Higher Tier Paper 1
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AQA Higher Tier Exam-style past paper with complete mark schemes, hints, AI assistance and detailed explanations.
44
Questions
Hard
Difficulty
60%
Pass mark
Difficulty breakdown
Easy(18)
Medium(20)
Hard(6)
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Q01.1Easy2 marks
A student produced a salt by reacting copper carbonate with sulfuric acid.
This is the method used.
- Measure 50 cm³ of sulfuric acid into a beaker.
- Add copper carbonate powder.
- Stir the mixture.
- Repeat steps 2 and 3 until copper carbonate is in excess.
- Filter the mixture.
- Warm the filtrate gently until crystals start to appear.
- Leave the solution to cool and crystallise.
Complete the word equation for the reaction.
copper carbonate + sulfuric acid → ______ + ______ + carbon dioxide
Q01.2Easy1 mark
Give one observation the student could make during Step 4 which shows that the copper carbonate is in excess.
Q01.4Easy1 mark
Name the equipment that can be used to warm the filtrate gently in Step 6.
Q01.5Medium3 marks
The maximum theoretical mass of the salt that could be produced using 50 cm³ of the sulfuric acid is 12.5 g.
The percentage yield of the salt is 92.8%.
Calculate the mass of salt actually produced.
Use the equation:
% yield = (mass of salt actually produced / maximum theoretical mass of salt that could be produced) × 100
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Free to browse · no sign-up requiredQ01.1A student produced a salt by reacting copper carbonate with sulfuric acid.
This is the method used.
1. Measure 50 cm...EasyQ01.2Give one observation the student could make during Step 4 which shows that the copper carbonate is in excess.EasyQ01.3Give one reason for filtering the mixture in Step 5.EasyQ01.4Name the equipment that can be used to warm the filtrate gently in Step 6.EasyQ01.5The maximum theoretical mass of the salt that could be produced using 50 cm³ of the sulfuric acid is 12.5 g.
The perc...MediumQ01.6Some salts can be produced by reacting sulfuric acid with a metal.
Neither copper nor sodium is used to produce a sal...MediumQ02.1This question is about the periodic table.
Sodium and potassium are in Group 1 of the periodic table.
Give one simila...EasyQ02.2Group 1 elements react with water.
Give two observations made when potassium reacts with water.EasyQ02.3Potassium hydroxide solution is produced when potassium reacts with water.
What is the colour of universal indicator ...EasyQ02.4Table 1 shows the densities of some of the elements in Group 0 of the periodic table.
Plot the data from Table 1 on F...MediumQ02.5Estimate the density (X) of krypton.
Use your plotted graph and Table 1.EasyQ02.6The elements in Group 7 are called the halogens.
A more reactive halogen can displace a less reactive halogen from a ...EasyQ02.7Which of the following describes the trends going down Group 7?EasyQ03.1This question is about models of the atom.
Figure 2 shows two early models of the atom.
Name the models of the atom s...EasyQ03.2Compare model A with the model of the atom used today.
Use Figure 2.MediumQ03.3Chadwick's experiments showed the existence of neutrons in an atom.
This led to an understanding of isotopes.
Define ...EasyQ04.1A student investigated the energy change of the reaction between zinc and copper sulfate solution. The method and res...MediumQ04.2Explain the results shown in Figure 3.
Do not refer to anomalous points.
Use data from Figure 3.HardQ04.3Explain why using a polystyrene cup gives more accurate results than using a glass beaker.EasyQ04.4Complete the ionic equation for the reaction between zinc and copper sulfate solution.
Include state symbols.
Zn(s) +...MediumQ04.5A different student repeated steps 1 to 5 of the method four times using 0.50 g of zinc powder.
Table 2 shows the res...MediumQ04.6The results show random errors.
The student did not make any measuring errors.
Suggest one reason for the random erro...MediumQ05.1This question is about ionic compounds and electrolysis.
Calcium chloride is an ionic compound.
Calcium and chlorine ...MediumQ05.2Solid calcium chloride cannot be electrolysed.
Give one reason why.EasyQ05.3Name the product formed at the negative electrode when aqueous calcium chloride solution is electrolysed.MediumQ05.4What is the half equation for the reaction at the positive electrode when aqueous calcium chloride solution is electr...MediumQ05.5A student investigated the electrolysis of green copper chromate solution. Figure 4 shows the apparatus and Figure 5 ...MediumQ06.1A student investigated the voltage produced by different pairs of metal electrodes in a chemical cell. Figure 6 shows...MediumQ06.2The voltage produced by a chemical cell depends on the concentration of the electrolyte solution.
Plan an experiment ...HardQ06.3Describe how a hydrogen fuel cell produces a potential difference.MediumQ07.1This question is about iron.
Iron is a metal.
Describe how iron conducts thermal energy.EasyQ07.2Pure iron is too soft for many uses.
Explain why mixing iron with other metals makes alloys which are harder than pur...MediumQ07.3When iron reacts with chlorine, 0.12 mol of iron reacts with 0.18 mol of chlorine (Cl₂).
Which is the correct equatio...MediumQ07.4The most common oxides of iron are Fe₂O₃ and Fe₃O₄.
What is the ratio of the numbers of ions in Fe₃O₄?HardQ07.5Calculate the percentage (%) by mass of iron in Fe₃O₄.
Relative atomic masses (Aᵣ): O = 16, Fe = 56MediumQ07.6Fe₂O₃ reacts with carbon to produce carbon dioxide.
The equation for the reaction is:
2Fe₂O₃(s) + 3C(s) → 4Fe(s) + 3C...HardQ08.1This question is about propane (C₃H₈).
Figure 7 shows the displayed structural formula of propane.
Explain why propan...MediumQ08.2Propane reacts with oxygen to produce carbon dioxide and water.
The reaction is exothermic.
Figure 8 shows four react...EasyQ08.3Figure 9 shows the displayed formula equation for the reaction between propane and oxygen.
The overall energy change ...HardQ09.1This question is about acids and their reactions.
Acids can be either weak or strong.
What is meant by 'a weak acid'?EasyQ09.2Explain what happens to the pH of an acid as the acid is diluted with water.EasyQ09.3A student does a titration to find the volume of acid needed to neutralise an alkali.
The student fills a burette wit...MediumQ09.4The student titrated a solution containing 0.0045 moles of sodium hydroxide with 0.15 mol/dm³ hydrochloric acid.
The ...MediumQ09.5A calcium atom is larger than a magnesium atom.
Explain why calcium reacts more vigorously than magnesium with hydroc...Hard