C2.5 - Exothermic And Endothermic Reactions Flashcards
1
Q
Which have more energy in an exothermic reaction: the reactants or the products?
A
The reactants.
2
Q
What happens during an endothermic reaction?
A
Heat energy is taken in from the surroundings.
3
Q
Which have more energy in an endothermic reaction: the reactants or the products?
A
The products.
4
Q
What are examples of exothermic reactions? (3)
A
- Oxidation.
- Neutralisation.
- Combustion.
5
Q
What happens during an exothermic reaction?
A
Heat energy is transferred to the surroundings.
6
Q
What are examples of endothermic reactions?
A
Thermal decompositions.
7
Q
If a reversible reaction is exothermic in one direction, what is it in the other?
A
Endothermic.
8
Q
How can you measure the rate of reaction? (3)
A
- Precipitation.
- Change in mass.
- Volume of gas given off.
9
Q
What is used to measure the volume of gas given off in a reaction?
A
A gas syringe.
