Exothermic & Endothermic Reactions (AQA GCSE Chemistry Combined Science): Quizzes
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Practise the questions
10 questions from this quiz
What is an exothermic reaction?
What is an exothermic reaction?
A reaction that gives out energy
How do the energy levels of products compare to reactants in an exothermic reaction?
How do the energy levels of products compare to reactants in an exothermic reaction?
Products have less energy
What happens to the temperature of the surroundings during an exothermic reaction?
What happens to the temperature of the surroundings during an exothermic reaction?
It increases
In a reaction profile for an exothermic reaction, where do the reactants start?
In a reaction profile for an exothermic reaction, where do the reactants start?
At a higher energy level
Where do products finish on a reaction profile for an exothermic reaction?
Where do products finish on a reaction profile for an exothermic reaction?
At a lower energy level than reactants
What do combustion reactions release?
What do combustion reactions release?
Heat and light
Which type of reaction occurs when acids react with alkalis?
Which type of reaction occurs when acids react with alkalis?
Neutralisation
What two substances react in hand warmers to produce heat?
What two substances react in hand warmers to produce heat?
Iron powder and oxygen
What is the chemical equation for the reaction in self-heating drinks?
What is the chemical equation for the reaction in self-heating drinks?
What is activation energy?
What is activation energy?
Energy hill reactants must climb over