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13 Cards in this Set
- Front
- Back
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Element
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A substance that cannot be split into simpler substances by chemical means
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Atom
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The smallest amount of any element which can exist
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Ion
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atom that has gained an electrical charge
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Molecule
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A group of atoms linked together in a particular arrangement, always bonded covalently
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Polar molecule
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Molecule with a charged region, e.g. water :
H slightly +, O slightly -, 0 H H (hollow quaver) = delta = slightly |
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Compound
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Combination of different elements formed during chemical bonding, either ionic or covalent.
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Organic compound
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Any compound that contains a carbon atom (water and salts are inorganic compounds).
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Valency
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The number of bonds an element usually forms
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Covalent bond
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A strong bond formed when electrons are shared between atoms.
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Hydrogen bond
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the slightly positive H of one molecule is attracted to the slightly negative area of ANOTHER molecule.
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Isomer
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Compound with the same chemical formula but a different structure.
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Condensation Reaction
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A reaction involving the loss of water.
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Hydrolysis
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The breakdown of a single compound by the addition of water.
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