Science project

Chemical Weathering

Rocks are not only changed by water, wind, and ice but can also be changed by chemicals. Chemical weathering is the process by which the actual minerals that rocks are made of are changed. Chemical weathering can cause minerals to decompose and even dissolve. Examples of chemical weathering include how acid rain can change the appearance of a statue and the way salty ocean water wears away cliffs.

Problem:

How does the process of chemical weathering change a mineral?

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Subject

Science

Earth & Space Science

Materials:

Clear plastic jar
Piece of chalk
Vinegar
Goggles

Procedure

Put your goggles on first thing. When pouring the vinegar be careful not to spill any on you and do not put your face directly over the jar.
Place a piece of chalk in the bottom of a clear plastic jar.
Carefully pour vinegar into the jar to cover the chalk. Watch closely.
Record your observations. What happened to the chalk? How did the vinegar react with the chalk?

Author: Angela Pike

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