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18 Cards in this Set
- Front
- Back
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atom |
smallest unit of all matter
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molecule
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2 or more atoms joined by a chemical bond
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nucleus
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core of an atom that contains protons and neutrons
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proton
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positively charged particle found in the nucleus of an atom
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neutron
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neutrally charged particle found in the nucleus of an atom
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electron
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negatively charged particle that orbits the nucleus
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covalent bond
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bond formed between 2 atoms by sharing an electron
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ionic bond
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bond formed between 2 atoms due to the attraction of opposite charges
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hydrogen bond
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weak bond formed between a hydrogen atom on one polar molecule and an atom on anotherr polar molecule
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polar molecule
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a molecule that is positive at one end and negative at the other end
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valence shell
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the outermost electron orbital
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valence electron
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an electron located in the valence shell of an atom
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octect rule
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every atom wants 8 electrons in its valence shell
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hydrophillic
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likes water and will dissolve in water
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hydrophobic
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doesn't like water and will not dissolve in water
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acid
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a substance with a pH below 7
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base
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a substance with a pH above 7
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pH
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a measure of the concentration of hydorgen ions (H+)
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