Chemical Weathering

Directions: Read the passage.

Chemical Weathering is a process that breaks down rock through chemical changes. This type of weathering produces a rock that has a different make up from the original rock. The agents of chemical weathering are water, oxygen, carbon dioxide, living organisms, and acid rain.

Water weathers the rock by dissolving the rock. Oxygen causes red or brown rust to form on some rocks and makes the rock soft and crumbly. Carbon dioxide produces carbonic acids that easily weathers marble and limestone. Living organisms produce weak acids that dissolve rock around roots. Acid rain, formed by burning coal, oil, and gas, causes very rapid chemical weathering.

Mechanical and chemical weathering often work together to break down rock and other substances at Earth’s surface.

Water Oxygen

Carbon Dioxide

Living Organisms

Acid RainAcid Rain

Chemical Weathering

Directions: Answer the following using the word

bank.

1. The process that breaks down rock through chemical

changes is called ____________________________.

2. ____________________________, formed by burning

coal, oil, and gas, causes very rapid chemical

weathering.

3. Carbonic acids that easily weathers marble and

limestone is produced from

____________________________.

4. ____________________________ weathers the rock by

dissolving

the rock.

1. ____________________________ produce weak acids

that dissolve the rock around roots.

2. The formation of red or brown rust which makes some

rocks soft and crumbly is caused by

____________________________.

Word Bank

acid rain carbon

dioxide

chemical weathering living

organisms

oxygen water

What have we learned?

Question

The process that

breaks down rock

through chemical

changes is called

_________________

___.

Question

_________________

___, formed by

burning coal,

oil, and gas,

causes very rapid

chemical

weathering.

Question

Carbonic acids

that easily

weathers marble

and limestone is

produced from

_________________

___.

Question

_________________

____ weathers the

rock by

dissolving the

rock.

Question

_________________

____ produce weak

acids that

dissolve the rock

around roots.

Question

The formation of

red or brown rust

which makes some

rocks soft and

crumbly is caused

by

_________________

___.