Matter

Essay specific features

 

Issue:

Science

 

Written by:

Christopher M

 

Date added:

December 27, 2013

 

Level:

College

 

Grade:

A

 

No of pages / words:

1 / 222

 

Was viewed:

10384 times

 

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Essay content:

Chemical changes happen on a molecular level. When you step on a can and crush it, you have forced a physical change. The shape of the object has changed. It wasn't a change in the state of matter, but a change in shape. When you melt an ice cube, you have also forced a physical change by adding energy...
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That example caused a change in the state of matter. You can cause physical changes with forces like motion, temperature, and pressure. Chemical changes happen on a much smaller scale. While some experiments show obvious chemical changes such as a color change, most chemical changes happen between molecules and are unseen...
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