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Bio ch.2 test vocab

QuestionAnswer
Elements A substance that cannot be decomposed into simpler substances by chemical means, and is made up of atoms all with identical number of protons
Isotopes atom of an element that has a # of neutrons different from that of other atoms of the same element
Ions atom that has a positive or negative charge
Solution mixture of 2+ substances in which the molecules of the substance are evenly distributed
Suspension a mixture with noticeable different particles, but they are small enough to appear evenly distributed. If left standing, the particles will separate.
Solutes substance that is dissolved in a solvent to make a solution
Solvents substance in which a solute is dissolved to form a solution
Polar a compound bearing a partial positive charge on one side and a partial negative charge on the other
Non-polar a compound that is non ionic or does not dissociate into ions
Monomer small unit that can join together with other small units to form polymers
Polymer large compound formed from combination's of many monomers
Enzyme protein that acts as a biological catalyst
Activation energy energy needed to get a reaction started
Substrates reactant of an enzyme-catalyzed reaction
Hydrogen bond the attractive force between the hydrogen attached to an electronegative atom of one molecule and an electronegative atom of a different molecule
Buffers a weak acid or base that helps prevent dramatic changes in pH levels
Saturated fats fatty acids that contain the maximum possible amount of hydrogen's
Unsaturated fats a fat that contains a carbon-carbon double bond
Created by: spazzoid103
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