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?
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?
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Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.
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