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Flashcards in Chapter 8 Deck (18):
1

Effect of conditions on rate:
TEMPERATURE

Increase and Decrease.

2

Effect of conditions on rate:
RATE #1

Increase - more kinetic energy, more chances of collisions
Decrease - less kinetic energy, fewer chances of collisions.

3

Effect of conditions on rate:
PRESSURE/CONCENTRATION RATE

Increase - more particles to collide
Decrease - less particles to collide.

4

Effect of conditions on rate:
SURFACE AREA

Increase and decrease.

5

Effect of conditions on rate:
RATE #2

Increase - more particles available to react
Decrease - less particles available to react

6

Effect of conditions on rate:
CATALYST

Present and Non-Present.

7

Effect of conditions on rate:
RATE #3

Faster, provides an alternative route with a lower activation energy.
Slower.

8

Reversible

A reaction that can turn reactants into products and products into reactants.

9

Dynamic equilibrium

A reaction in which the forwards and backwards reactions occur at the same rate and the concentrations of reactants and products are constant.

10

Forwards reaction

The reaction that is forming products from reactants.

11

Backwards reaction

The reaction that is forming reactants from products.

12

Exothermic

A reaction that releases heat energy to the surroundings.

13

Endothermic

A reaction that takes in heat energy to the surroundings,

14

Rate of reaction

Change in concentration of reactants or products over unit time.

15

Catalyst

A substance that is not used up that provides an alternative pathway for a reaction to with a lower activation energy, speeding up the rate of reaction.

16

Collision theory

Reactions only occur when particles collide with enough energy.

17

Surface area

Area of a surface that has particles available to react.

18

Closed system

No conditions can be changed externally.