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Definition
| Same atomic number but different mass number |
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Definition
| the number of electrons is equal to the number of protons |
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Definition
| Atoms try to fill their outermost shell with 8 electrons or 0 electrons |
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Definition
| More protons than electrons |
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Definition
| More electrons than protons |
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Definition
| complete their outer shells by stealing (robbing) or giving away electrons |
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Term
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Definition
| the sharing of a pair of outer-shell electrons by two atoms |
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Definition
| two or more atoms held together by covalent bonds |
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Term
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Definition
| two shared pairs of electrons |
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Definition
| tendency for an atom to pull electrons toward itself |
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Term
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Definition
| Equal sharing of electrons |
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Term
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Definition
| Unequal sharing of electrons |
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Term
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Definition
| The bonding between water molecules |
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Term
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Definition
| The sticking-together of molecules |
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Term
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Definition
| pH7, the amount of H+ ions and OH- ions are equal |
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Term
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Definition
| Below pH7, higher concentration of H+ ions |
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Term
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Definition
| Above pH7, higher concentration of OH- ions |
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Term
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Definition
| Are required in very small amounts but are essential |
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Definition
| A molecule with more than one type of atom |
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Definition
| Because of the cohesion of water molecules, small insects can walk on the surface (not enough force to break apart the cohesive force between water molecules) |
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Term
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Definition
| Something that prevents a drastic change of pH (can absorb a large no. of H+ or OH- ions) |
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Term
| Number of naturally occurring elements |
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Definition
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Term
K is the symbol for...
P is the symbol for... |
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Definition
K = Potassium
P = Phosphorus |
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Term
| A goiter is the result in the lack of |
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Definition
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