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10 Cards in this Set
- Front
- Back
matter
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anything that takes up space and has mass
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Physical Properties
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characteristics of matter that can be observed without changing the composition of the substance
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Chemical Properties
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characteristics that describe how a substance interacts with other substances. (iron forming rust)
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Atom
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the smallest unit of an element
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protons
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positive electrical charge inside an atom Represented by the atomic number
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atomic number
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a number that tells the number of protons in an element, used to identify elements on the periodic table
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molecules
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The smallest complete unit of a compound
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ions
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an atom or group of atoms that carry an electrical charge
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ionic compound
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a compound formed through the transfer of electrons
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alloy
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a solution of two or more metals
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