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Cumulative Vocab

Midterm Review

TermDefinition
manipulated variable the independent variable in an experiment; you can decide ahead of time to increase it or decrease it, or change it.
responding variable the dependent variable in an experiment; the part of the experiment that is observed for some kind of change or effect.
heterogeneous mixture any mixture that is not uniform in composition.
homogeneous mixture any mixture that is uniform in composition throughout.
SI units a system of physical units based on the meter, kilogram, second, ampere, kelvin, candela, and mole, together with a set of prefixes to indicate multiplication or division by a power of ten.
heat of fusion change in enthalpy resulting from heating a given quantity of a substance to change its state from a solid to a liquid.
dissociation the disconnection or separation of something from something else or the state of being disconnected.
buffer a solution that resists changes in pH when acid or alkali is added to it. Buffers typically involve a weak acid or alkali together with one of its salts.
orbital each of the actual or potential patterns of electron density that may be formed in an atom or molecule by one or more electrons, and that can be represented as a wave function.
chemical energy energy stored in the bonds of chemical compounds; released in a chemical reaction, often producing heat as a by product.
Created by: michelle4231
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