Reactions

Question 1

What is an exothermic reaction?

Answer 1

it gives out heat

Question 2

What is an endothermic?

Answer 2

it means to take in heat

Question 3

what is catalysts?

Answer 3

They are substances that are added to a chemical reaction, causing it to speed up or slow down. It is NOT changed by the reaction and can be recovered and reused.

Question 4

what is combustion and what is the equation?

Answer 4

It is what we often call ‘burning’. It is a type of chemical reaction as new products are made and it is irreversible.
Hydrocarbon +oxygen——carbon dioxide+ water

Question 5

is Combustion endothermic or exothermic?

Answer 5

Exothermic

Question 6

what is incomplete combustion?

Answer 6

hydrocarbon+ oxygen——carbon monoxide+ carbon+ water

Question 7

What is thermal decomposition?

Answer 7

Reactions that happen when substances break down into simpler products when heated. NO new substances are added.