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15 Cards in this Set
- Front
- Back
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The science of structure and interactions of matter
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Chemistry
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Anything that occupies space and has mass
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Matter
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Amount of matter a substance contains
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Mass
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Force of gravity acting on a mass
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Weight
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Substances that cannot be split into simpler substances by ordinary chemical means
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Chemical Elements
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Letter abbreviations are called...
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Chemical Symbols
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What 4 elements make up 98% of body weight?
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Oxygen (O), Carbon (C), Hydrogen (H), Nitrogen (N)
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Units of matter of all chemical elements
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Atoms
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Atoms consist of a ______, which contains positively charged_______ and uncharged __________, and negatively charged __________.
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Nucleus, Protons, Neutrons, Electrons
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The number of _______ in an atom of a neutral charge always equals the number of _______.
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Neutrons, Protons
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The number of protons in the nucleus of an atom
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Atomic Number
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An atom that has a positive or negative charge due to having unequal numbers of protons and electorons
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Ion
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When 2 or more atoms share electrons, the resulting combination
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Molecule
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Substance the can be broken down into two or more different elements by ordinary chemical means
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Compound
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The atoms of a molecule are held together by forces of attraction
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Chemical bonds
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