Day 1  Day 2  Day 3  Day 4  Day 5  Day 6

Day 1

Question 1

Which barium salts are soluble in water?

• Barium carbonate

• Barium chloride

• Barium nitrate

• Barium sulfate

• 1 and 2

• 1 and 4

• 2 and 3

• 3 and 4

Question 2

Copper(II) sulfate is prepared by adding excess copper(II) carbonate to sulfuric acid.

Why is an excess of copper(II) carbonate added?

• To ensure all the copper(II) carbonate has reacted.

• To ensure all the sulfuric acid has reacted.

• To increase the rate of the reaction

• To increase the amount of copper(II) sulfate produced.

Day 2

Question 1

An aqueous solution reacts with a solid. The products are an alkaline gas, a salt and water.

What are the aqueous solution and the solid.

Question 2

Which of the following gives the correct increasing order of acidic strength?

• Water < ethanoic acid < hydrochloric acid

• Water < hydrochloric acid < ethanoic acid

• Ethanoic acid < water < hydrochloric acid

• Hydrochloric acid < water < ethanoic acid

Day 3

Question 1

Which equation shows a reaction which cannot be used to make a silver salt?

• AgNO3​​ + HCl​​ ​​ AgCl + HNO3

• Ag2O​​ + 2HNO3​​ ​​ 2AgNO3​​ + H2O

• Ag2CO3​​ + 2HNO3​​ ​​ 2AgNO3​​ + H2O​​ + CO2

• 2Ag + 2HCl​​ ​​ 2AgCl + H2

Information about some silver compounds is shown.

Question 2

Aqueous ethanoic acid is a weak acid.

Aqueous sodium hydroxide is a strong base.

Aqueous ethanoic acid is neutralised by aqueous sodium hydroxide.

Which statements are correct.

• Aqueous ethanoic acid accepts protons from hydroxide ions.

• The aqueous ethanoic acid used is fully dissociated into ions.

• The aqueous sodium hydroxide used is fully dissociated into ions.

• The reaction produces a salt and water.

• 1 and 2

• 1 and 3

• 2 and 4

• 3 and 4

Day 4

Question 1

Both calcium oxide, CaO, and calcium hydroxide, Ca(OH)2, are used to remove sulfur dioxide, SO2, from flue gases in industrial plants.

Which row classifies calcium oxide, calcium hydroxide and sulfur dioxide?

Question 2

The oxides of the elements, X and Y, are separately dissolved in water and the pH of each solution tested.

Which information about X and Y is correct?

Day 5

Question 1

Reactions of three metals and their oxides are shown.

What is the order of reactivity of these metals, from most reactive to least reactive?

• 1​​ ​​ 2​​ ​​ 3

• 1​​ ​​ 3​​ ​​ 2

• 2​​ ​​ 1​​ ​​ 3

• 2​​ ​​ 3​​ ​​ 1

Question 2

Which oxide is classified as an amphoteric oxide?

• Aluminium oxide

• Calcium oxide

• Copper(II) oxide

• Nitrogen oxide

Day 6

Question 1

Which row about aqueous ethanoic acid and dilute hydrochloric acid is correct?

Question 2

Ethanoic acid reacts with water to produce an acidic solution.

Which row describes the roles of ethanoic acid and water in this reaction?