The Energy Change of Reactions (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
ShowHide
Practise the questions
13 questions from this quiz
What does the principle of conservation of energy state?
What does the principle of conservation of energy state?
Energy can't be created or destroyed
In a chemical reaction, what does the term 'system' refer to?
In a chemical reaction, what does the term 'system' refer to?
The chemical reaction being studied
What are the 'surroundings' in a chemical reaction?
What are the 'surroundings' in a chemical reaction?
Everything outside the reaction
In exothermic reactions, how does energy in reactants compare to energy in products?
In exothermic reactions, how does energy in reactants compare to energy in products?
Reactants have more energy than products
What happens to the temperature of surroundings in an exothermic reaction?
What happens to the temperature of surroundings in an exothermic reaction?
Temperature increases
Which of these is an example of an exothermic reaction?
Which of these is an example of an exothermic reaction?
Combustion
In endothermic reactions, how does energy in products compare to energy in reactants?
In endothermic reactions, how does energy in products compare to energy in reactants?
Products have more energy than reactants
What happens to the temperature of surroundings in an endothermic reaction?
What happens to the temperature of surroundings in an endothermic reaction?
Temperature decreases
Which of these is an example of an endothermic reaction?
Which of these is an example of an endothermic reaction?
Photosynthesis
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
If the energy change for a reaction is positive, what type of reaction is it?
If the energy change for a reaction is positive, what type of reaction is it?
Endothermic