Chemical Reactions Flashcards
1
Q
What is combustion?
A
Combustion is burning in oxygen.
2
Q
What does combustion need?
A
1) Fuel
2) Heating
3) Oxygen
3
Q
What is Oxidation?
A
It is the gain of oxygen.
4
Q
What is it called when a substance reacts with oxygen?
A
It is called Oxidation.
5
Q
What is Thermal decomposition?
A
Its when you heat a substance and it breaks down.
6
Q
What do atoms do in a chemical reaction?
A
They move around.
7
Q
Does mass change in a chemical reaction?
A
No, it doesn’t.
8
Q
What is an exothermic reaction?
A
It is a reaction that transfers energy to the surroundings (E.g combustion).
9
Q
What is an endothermic reaction?
A
Its a reaction that takes in energy from the surroundings.
10
Q
What are catalysts?
A
A catalyst is a substance which speeds up a chemical reaction.
