Chemical Weathering Review

What is chemical weathering?

• It is when rocks are broken down by a chemical reaction.
• It is when rocks bang into each other, and the rocks break.
• It is when ice breaks rocks into smaller pieces.
• It is when wind blows against a rock and breaks it down.

How is acid rain created?

• It is created when humans cook with vinegar.
• It is created when humans burn fossil fuels.
• It is created in the clouds.
• It is created when humans throw chemicals up into the air as it rains.

When acid contacts a rock, how do you know that a chemical reaction occurred?

• You will hear a loud noise.
• You will feel a sharp pain.
• You will see bubbles.
• You will smell smoke.

When we let the rock sit in acid rain overnight, what evidence did we see the next day that proved a chemical reaction occurred?

• The jar that held the rock had vanished.
• The original rock was replaced with white crystals.
• The rock had doubled in size.
• The rock had turned red.

Which two rocks had a reaction with acid rain?

• Sand and Basalt
• Basalt and Limestone
• Sand and Marble
• Marble and Limestone

What mineral in rocks causes the rock to have a chemical reaction with acid rain?

• calcite
• gypsum
• aluminum
• cerium

How does rust form?

• Carbon Dioxide reacts with calcite to form iron oxide.
• Carbon Monoxide reacts with rust to form iron oxide.
• Oxygen reacts with iron to form iron oxide.
• Oxygen reacts with calcite to form iron oxide.

True or False? Living things can cause a chemical reaction with rocks.

• True
• False