Term
| small particles that make up all matter |
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Definition
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Term
| when atoms of two or more elements combine |
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Definition
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Term
| what changes in a chemical reaction |
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Definition
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Term
| center of an atom, made up of protons and neutrons |
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Definition
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Term
| particles with a positive charge |
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Definition
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Term
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Definition
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Term
| are outside of the nucleus and are negatively charged |
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Definition
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Term
| all atoms of an element have these |
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Definition
| same number of protons and electrons |
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Term
| what is the atomic number |
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Definition
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Term
| atoms of any element have have a different number of ______, these are called _______ |
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Definition
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Term
| weighted average mass of different isotopes |
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Definition
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Term
| what is the mass number of an isotope? |
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Definition
| number of protons + number of neutrons |
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Term
| an atom which has either lost or gained electrons |
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Definition
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Term
| what changes in the formation of an ion |
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Definition
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