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chemistry

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by

Desomond Jones

on 29 April 2015

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Transcript of chemistry

substances of which matter is composed or elements make up substances
how is chemistry used to help people?
chemistry can be used to help people by making medicines to fight or treat diseases.
matter
matter is Atoms and molecules that are around you .matter is anything that haves mass, mass is anything that take up space
The four types of matter are solids,liquids,gases and plasmas

gas assumes the shape and volume of its container
liquid assumes the shape of the part of the container which it occupies
solid retains a fixed volume and shape

physical changes
do not change the chemical makeup su bstance or any change NOT involving a change in the substance

example :Ice melting is a change from a solid to a liquid and the substances maintain the properties of water because the molecules never change.
chemical changes
chemical changes are when the bonds between atoms in a molecule are created or destroyed changes .But for physical state is caused by environment changes like temperature, pressure, and other physical forces.
chemistry
chemistry
chemistry
chemistry
by:Faith Alford
Frankie Martinez

Example: rust of iron , baking a cake
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