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21 Cards in this Set
- Front
- Back
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element
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any of the building blocks of matter; hydrogen, carbon, for example
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compund
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substance compose of two or more different elements, the atoms of which are chemically united
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ion
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an atom with a positive or negative electric charge
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salt
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ionic compound that dissociates into charged particles (other than hydrogen of hydroxyl ions) when dissloves in water
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catalyst
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a substance that accelerates a specific chemical reaction but that is not alterd by the reaction
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inorganic compund
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a compound that lacks carbon; for example water
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organic compound
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a compound containing carbon; examples include proteins, carbohydrates and fats
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solution
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a homogenous mixture of two or more components
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proton
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subatomic particle that bears a positive charge, located int he atomic nucleus
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poalr molecules
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nonsymmetrical molecules that contain electrically unbalanced atoms
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pH
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the symbol for hydrogen ion concentration; a measure of the relative acidity of alkalinity of a solution
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neutron
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a fundamental particle that does not carry a positive or negative charge
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neutralization
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(1) a chemical reaction that occurs between an acid and a base; (2) blockage of harmful effects of bacterial exotoxins or viruses by the binding of antibodies to their functioning site
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ionization
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dissociation; the breakdown of a molecule in a solution to form ions
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matter
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anything that occupies space or mass
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enzyme
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a substance formed by living cells that acts as a catalyst in bodily chemical reactions
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hydrogen bond
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weak bond in which ahydrogen atom forms a bridge between two electron-hungry atoms; an important intramo-lecular bond
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base
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a substance that accepts hydrogen ions; proton acceptor; compare with acid
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acid
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a substance that liberates hydrogen ions when in an aqueous solution; compare with base
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electrolyte
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a substance that breaks down into ion when in solution and is capable of conducting and electric current
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isotope
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these vary in the number of neutrons they contain and they are different atomic form of the same element
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