The Energy Change of Reactions (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does the principle of conservation of energy state?
What does the principle of conservation of energy state?
Energy cannot be created or destroyed
What remains constant according to conservation of energy?
What remains constant according to conservation of energy?
Total energy of the universe
What does the term 'system' refer to in energy changes?
What does the term 'system' refer to in energy changes?
The chemical reaction being studied
In exothermic reactions, how does energy in reactants compare to products?
In exothermic reactions, how does energy in reactants compare to products?
Energy in reactants is greater
What happens to the temperature of surroundings in an exothermic reaction?
What happens to the temperature of surroundings in an exothermic reaction?
It increases
Which reactions are examples of exothermic reactions?
Which reactions are examples of exothermic reactions?
Combustion and neutralisation
In endothermic reactions, how does energy in products compare to reactants?
In endothermic reactions, how does energy in products compare to reactants?
Energy in products is greater
What happens to temperature of surroundings in an endothermic reaction?
What happens to temperature of surroundings in an endothermic reaction?
It decreases
Which reactions are examples of endothermic reactions?
Which reactions are examples of endothermic reactions?
Photosynthesis and thermal decomposition
What happens when a chemical bond is broken?
What happens when a chemical bond is broken?
Energy must be absorbed
What happens when a chemical bond is made?
What happens when a chemical bond is made?
Energy is released
If the energy change for a reaction is negative, what type of reaction is it?
If the energy change for a reaction is negative, what type of reaction is it?
Exothermic