9/18/12 test
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| anything that occupies space and has mass | matter
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| amount of space occupied by matter | volume
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| amount of matter in an abject | mass
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| ratio of the matter's mass to its volume | density
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| the form in whcih matter exists | physical state
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| physical properties of matter | size, shape, texture, hardness, volume, mass, density, physical state
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| chemical properties of matter | ability to burn, ability to rust, ability to decompose
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| the basic unit of matter; comes from Greek word atomos, which means "unable to cut" | atom
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| subatomic particles of an atom | proton, neutron, and electron
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| particle with relatively large mass and positive charge | proton
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| about the same mass as a proton and no charge | neutron
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| relatively small mass and a negative charge; move around outside of the neucleus | electron
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| the center of the atom | nucleus
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| pure subtance that consists entirely of one type of atom | element
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| amount of protons in an element | atomic number
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| number of protons plus the number of neutrons | mass number
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| atoms of the same element that differ in the number of neutrons they contain | isotopes
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| the weighted averages of the masses of an element's isotopes | atomic mass
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| substance formed by the chemical combination by two or more elements in definite proportion | compound
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| main types of bonds | ionic bond and covalent bonds
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| chemical bond formed when one or more electrons are transferred from one atom to another | ionic bond
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| type of bond between in which the electrons are shared | covalent bodn
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Created by:
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