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10 Cards in this Set
- Front
- Back
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Matter |
*Anything that has mass and takes up space. *is composed of atoms that cannot be broken down to substances with different chemical or physical properties. |
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Physical states of matter |
Solids, Liquids and Gases |
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Describe Solid physical state |
* The particles are closely packed together * has a stable, definite shape and volume * can only change their shape by force, as when broken or cut. * can be transformed into liquids by melting. *can change directly into gases through the process of sublimation. |
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Describe Liquid physical state |
* conforms to the shape of its container. * can be transformed into solids by freezing |
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Describe Gaseous physical state |
* a compressible fluid that not only will conform to the shape of its container but it will also expand to fill the container. * change directly into solids through deposition. |
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Element |
A pure substance consisting of only one type of atom. |
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Atom |
The smallest particle into which an element can be divided. |
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Subatomic particles |
Electron (negative charge ( - ) ) Proton (positive ( + ) ) Neutron (no charge ( 0 ) ) |
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Structure of an Atom |
Electron orbits nucleus Proton and Neutron within nucleus |
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Atomic Number |
The number of PROTONS an atom has. It is characteristic and unique for each element. |
