Atoms, Acids, Bases, Salts, and Electrolysis Quiz
Test your knowledge of Atoms, Acids, Bases, Salts, and Electrolysis, as part of GCSE Chemistry with this quiz.
This quiz consists of 15 questions, including multiple-choice and short-answer questions on the topic of Atoms, Acids, Bases, Salts, and Electrolysis for GCSE Chemistry.
For multiple-choice questions, choose the correct answer. Scroll down to begin the quiz.
Questions
What is the pH of a neutral solution?
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Which gas is released when an acid reacts with a metal carbonate?
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Which ion is responsible for acidity in aqueous solutions?
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What is the name of the salt formed when hydrochloric acid reacts with sodium hydroxide?
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What is produced at the cathode during the electrolysis of molten sodium chloride?
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What is the difference between a strong acid and a weak acid?
A strong acid completely ionises in solution (e.g., hydrochloric acid), whereas a weak acid only partially ionises (e.g., ethanoic acid).
What happens when an acid reacts with a base? Write a word equation for an example.
A neutralisation reaction occurs, producing a salt and water. Example:
Hydrochloric acid + Sodium hydroxide → Sodium chloride + Water
Describe what happens in the electrolysis of brine.
In the electrolysis of brine (sodium chloride solution), hydrogen is produced at the cathode, chlorine at the anode, and sodium hydroxide remains in the solution.
What is oxidation in terms of electron transfer?
Oxidation is the loss of electrons.
What is reduction in terms of electron transfer?
Reduction is the gain of electrons.
Why is electrolysis used to extract metals such as aluminium?
Electrolysis is used for metals that are too reactive to be extracted by reduction with carbon, such as aluminium, which is extracted from molten aluminium oxide.
What is the test for hydrogen gas?
A lit splint produces a ‘pop’ sound when placed in a test tube containing hydrogen gas.
Why do ionic compounds only conduct electricity when molten or dissolved?
In the solid state, the ions are held in a fixed structure and cannot move. When molten or dissolved, the ions are free to move and carry charge.
Give the formula for sulphuric acid and name the salt formed when it reacts with potassium hydroxide.
The formula for sulphuric acid is H₂SO₄. The salt formed is potassium sulphate (K₂SO₄).
What are the three products of the electrolysis of brine, and what are their uses?
- Chlorine gas – used for disinfecting water and making bleach.
- Hydrogen gas – used in fuel cells and to make ammonia.
- Sodium hydroxide – used in soap and paper production.
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