Endothermic and exothermic reactions (Edexcel GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is the 'system' in a chemical reaction?
What is the 'system' in a chemical reaction?
The specific chemical reaction itself
What are the 'surroundings' in a chemical reaction?
What are the 'surroundings' in a chemical reaction?
Everything outside the reaction
According to the conservation of energy, what happens to energy?
According to the conservation of energy, what happens to energy?
Cannot be created or destroyed
What do exothermic reactions do with energy?
What do exothermic reactions do with energy?
Release energy to the surroundings
What happens to temperature in an exothermic reaction?
What happens to temperature in an exothermic reaction?
Temperature goes up
What do endothermic reactions do with energy?
What do endothermic reactions do with energy?
Absorb energy from the surroundings
What happens to temperature in an endothermic reaction?
What happens to temperature in an endothermic reaction?
Temperature goes down
If a reaction causes temperature to increase, what type is it?
If a reaction causes temperature to increase, what type is it?
Exothermic
If a reaction causes temperature to decrease, what type is it?
If a reaction causes temperature to decrease, what type is it?
Endothermic
What remains constant during chemical reactions?
What remains constant during chemical reactions?
Total energy of the universe
What is activation energy?
What is activation energy?
Minimum energy needed for bonds to break
What happens if energy is less than the activation energy?
What happens if energy is less than the activation energy?
The reaction doesn't happen