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20 Cards in this Set
- Front
- Back
subunits of elements
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atoms
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positively charges particles in the nucleus
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protons
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noncharged particles in hte nucleus
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neutrons
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negatively charged particles in energy levels around the nucleus
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electrons
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orbits that hold electrons at specific distances from the nucleus
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energy levels
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number of electrons lost or gained in a chemical reaction
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valence electrons
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combination of two or more atoms
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molecule
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substance composed of different elements
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compounds
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solvent, essentrial for metabolism
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water
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blend of two or more substances
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mixture
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substance remains evenly distibuted in solvent
homogenous |
solution
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material settles out of mixture
heterogeneous |
suspension
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particles do no dissolve but remain suspended
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colloid
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formed by transfer of electrons from one atom to another
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ionic bonds
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positively charged ion
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cation
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negatively charged ion
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anion
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formed by sharing of electrons between atoms
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covalent bods
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below 7
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acidic
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greater 7
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basic
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charicteristic of organic compounds
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carbon
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