Question

define the terms :
I will mark you as brainliest​

Answer 1

Answer:

exothermic- the reaction in which heat is released

endo - the reaction in which heat is absorbed

catalyst- the enzymes that speed up a chemical reaction

Answer 2

Answer:

1.bubbles in a liquid; fizz.

2. Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light.

3.Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products.

4. a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible.

Explanation:

hope this helps u

pls mark me the brainliest