IPS Chemical Interactions Chapter 2 Section 3 Flashcards
1
Q
activation energy
A
the minimum amount of energy needed to start a chemical reaction
2
Q
catalyst
A
a material that increases the rate of a reaction by lowering activation energy
3
Q
concentration
A
the amount of a substance in a given volume
4
Q
enzyme
A
biological catalysts
5
Q
How do faster-moving particles increase reaction rates?
A
- The particles come in contact more often (there are more chances for reactions)
- Faster-moving particles have more energy
6
Q
inhibitor
A
material used to decrease the rate of a reaction
7
Q
What are the five factors that can change a reaction speed?
A
- Surface area
- Temperature
- Concentration
- Catalysts
- Inhibitors
8
Q
When you heat a substance, do the particles move slower or faster?
A
faster
