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12 Cards in this Set
- Front
- Back
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substance with a pH less than 7
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acid
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state of matter with no definite shape or volume
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gas
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state of matter that has definite volume but no definite shape
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liquid
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substance with a definite shape and volume
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solid
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substance with a pH greater than 7
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base
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substance formed of atoms from two or more elements
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compound
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subatomic particle with a positive electric charge
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proton
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subatomic particle with no electric charge
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neutron
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negatively charged subatomic particle
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electron
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number of protons in an atom
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atomic number
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smallest unit of a pure substance that still has all the properties of the substance
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atom
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center of an atom, surrounded by a cloud of electrons
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nucleus
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