Chemical and Energy Changes Quiz
Test your knowledge of Chemical and Energy Changes, 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 Chemical and Energy Changes for GCSE Chemistry.
For multiple-choice questions, choose the correct answer. Scroll down to begin the quiz.
Questions
What is produced at the positive electrode (anode) during the electrolysis of molten sodium chloride?
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Which of the following is a strong acid?
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Which of the following metals can be extracted from its ore by heating with carbon?
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What is the function of a fuel cell?
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What is the pH of a neutral solution?
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What happens to the temperature of the surroundings during an exothermic reaction?
The temperature of the surroundings increases because energy is released.
Write the word equation for the reaction between hydrochloric acid and sodium hydroxide.
Hydrochloric acid + Sodium hydroxide → Sodium chloride + Water
Why are aluminium and titanium extracted using electrolysis rather than carbon?
They are more reactive than carbon, so they cannot be reduced by it and must be extracted using electrolysis.
Describe how a hydrogen fuel cell produces electricity.
Hydrogen reacts with oxygen in the fuel cell, producing water and releasing energy, which is converted into electricity.
What are the products of the reaction between sulphuric acid and zinc?
Zinc sulphate and hydrogen gas
How does concentration affect the rate of reaction?
A higher concentration increases the number of reactant particles in a given volume, leading to more frequent collisions and a faster reaction rate.
What is the difference between a strong acid and a weak acid?
A strong acid fully ionises in solution, while a weak acid only partially ionises.
What ions are responsible for acidity and alkalinity in a solution?
- Acidity: H⁺ (hydrogen) ions
- Alkalinity: OH⁻ (hydroxide) ions
What type of reaction occurs when an acid reacts with a metal carbonate?
A neutralisation reaction, producing a salt, water, and carbon dioxide.
Why is electrolysis an expensive method for extracting metals?
Electrolysis requires large amounts of electrical energy, which makes it costly.
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