Science Notes-Chemistry Ch. 19

Front 1

Catalyst(effect on activation energy needed)

Back 1

Catalyst-speeds up a chemical reaction
It effects activation energy b/c it adds more power to the activation energy

Front 2

Endothermic Reactions

Back 2

Endothermic Reactions absorb heat energy

Front 3

Exothermic Reactions

Back 3

Exothermic Reactions release heat energy

Front 4

Chemical Reaction

Back 4

A process that produces a chemical change

Front 5

Activation Energy

Back 5

The minimum amount of energy needed to start any chemical reaction

Front 6

Reactants

Back 6

Substances that exist before the reaction begins

Front 7

Products

Back 7

The substances that form as a result of the reaction

Front 8

Enzymes(2 ways your body uses them)

Back 8

Enzymes-large protien molecules that speed up reactions needed for your cells to work properly
They help your body to convert food to fuel

Front 9

Inhibitor

Back 9

An inhibitor is a substance that slows down the rate of a reaction

Front 10

4 indicators of a chemical reaction

Back 10

Sight, smell,sound,touch,taste
(a chemical reaction could be milk going sour or paper burning)

Front 11

Count atoms in a chemical equation
Decide if chemical equation is balanced or unbalanced

Back 11

Ag+H2 S--------->Ag2 S+H

Ag-1 H- 2 S-1
Ag- 2 H- 1 S-1 (unbalanced)

Front 12

How does temp., concentration, surface area, change the rate of a chemical reaction?

Back 12

Temp-Lowering it slows down the rate Raising it speeds up a reaction
Concentration-Molecules collide @ higher concentrations and slow down @ a lower concentration
Surface Area-The larger the particles the more likely they won't react, the smaller the more likely they will react.