IPS Chemical Interactions Chapter 2 Section 3

Question 1

activation energy

Answer 1

the minimum amount of energy needed to start a chemical reaction

Question 2

catalyst

Answer 2

a material that increases the rate of a reaction by lowering activation energy

Question 3

concentration

Answer 3

the amount of a substance in a given volume

Question 4

enzyme

Answer 4

biological catalysts

Question 5

How do faster-moving particles increase reaction rates?

Answer 5

1. The particles come in contact more often (there are more chances for reactions)
2. Faster-moving particles have more energy

Question 6

inhibitor

Answer 6

material used to decrease the rate of a reaction

Question 7

What are the five factors that can change a reaction speed?

Answer 7

1. Surface area
2. Temperature
3. Concentration
4. Catalysts
5. Inhibitors

Question 8

When you heat a substance, do the particles move slower or faster?

Answer 8

faster