Physical Changes Essay

Topics: Chemistry, Temperature, Water Pages: 2 (545 words) Published: December 5, 2014
Catie Bates
10/22/2014
Physical Science
Physical Changes

I like physical changes more than chemical changes. Some reasons are, physical change is "easily" reversible, how liquids can become solid and vice versa, the solid disappears but just the application of heat can boil the water off and get the salt back in the same form. Therefore, I like physical changes more than chemical changes.

I like physical changes more than chemical changes because physical change is "easily" reversible because physical changes involve states of matter and energy. No new substance is created during a physical change, although the matter takes a different form. Also, physical changes occur when substances are mixed, but don't chemically react. Therefore, I like physical changes more than chemical changes because physical change is "easily" reversible

I like physical changes more than chemical changes because of how liquids can become solid and vice versa. Fusion is the change of state from a solid to a liquid at the same temperature. The opposite of fusion is freezing—a liquid changes into a solid. After a while, some of the particles move so fast that they break free of the crystal lattice (which keeps a solid solid), and the lattice eventually breaks apart. Therefore, I like physical changes more than chemical changes because of how liquids can become solid and vice versa.

I like physical changes more than chemical changes because the solid disappears but just the application of heat can boil the water off and get the salt back in the same form. Water can be boiled in a paper cup filled with water and the cup will not be burned or charred. The cup must have a flat bottom without a lip or the lip will burn. The cup should be filled nearly to the top so that the top of the cut does not burn. I think that it's cool that you can change something like that and I can go back to the way it was in the beginning. Imagine making popcorn in the microwave: before you put...
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