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Definition
| positively charged particle (within nucleus) (mass 1) |
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Definition
| particle with no charge (found within nucleus)(mass >1) |
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Definition
| negatively charge particle (orbits nucleus) (mass 1) |
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Term
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Definition
| building block of matter(made up of subatomic particles-- proton, neutron, electron) |
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Term
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Definition
| a pure substance: composed of one type of atom-- can not be broken down into another substance |
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Term
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Definition
| pure substance with unique properties: two or more elements combined |
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Term
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Definition
| compounds who's atoms are held together by covalent bonds |
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Definition
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Definition
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Definition
| bond in which atoms SHARE electrons |
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Definition
| electrical attraction between two oppositely charged atoms: one atom steals the other atom's electron |
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Term
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Definition
| number of protons OR electrons |
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Definition
| number of protons AND neutrons |
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Definition
| anything that has mass and takes up space |
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Term
| four most abundant elements in living things |
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Definition
| nitrogen, oxygen, carbon, hydrogen |
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| smallest particle of an element |
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Definition
| electrons in the highest energy level |
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Definition
| atoms with partially filled energy levels |
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Definition
| atoms with already filled energy levels |
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Definition
| atoms (or groups of atoms) that have become electrically charged |
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Term
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Definition
| the breaking and making of chemical bonds to form new substance |
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