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Definition
| positively charged particle |
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Definition
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Definition
| combination of protons and neutrons |
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Definition
| negatively charged particles that move around outside the nucleus |
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Definition
| identity of an atom is determined by the number of protons in its nucleus |
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Definition
| total number of protons and neutrons in an atom's nucleus |
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Definition
| atoms of the same element that have a different number of neutrons |
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Definition
| formed when an atom looses or gains one or more electrons |
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Definition
| average mass of all the atoms of an element |
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Definition
| it shows periodic, or repeating, pattern of properties of the elements |
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Term
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Definition
| elements in a column in the periodic table |
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Definition
| horizontal row in the periodic table |
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Definition
| indicates how likely an element is to undergo a chemical change |
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Definition
| elements that conduct electricity, heat well and have a shiny appearance |
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Definition
| properties opposite of those of metals |
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Definition
| elements that have properties of metals and nonmetals |
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Definition
| process where atoms produce energy and particles |
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Definition
| amount of time that it takes for one-half of the atoms in a particular sample to decay |
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