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37 Cards in this Set
- Front
- Back
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activation energy
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The energy that must be overcome for a chemical reaction to occur.
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bonds
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Electrical forces linking atoms.
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catalysts
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Substances that increase the rate of a chemical reaction without being changed themselves at the end of the reaction.
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chemical equation
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A way to describe a chemical reaction using chemical formulas and other symbols.
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chemical reaction
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The change that occurs when two or more substances interact to form new substances.
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law of conservation of mass
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In a chemical reaction, matter isn't created or destroyed.
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products
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The substances produced in a chemical reaction.
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reactants
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The chemical substances present at the start of a chemical reaction.
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aqueous solution
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A solution of particles dissolved in water.
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combination reaction
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A chemical reaction where two or more reactants form one product.
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combustion reaction
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A chemical reaction in which energy is produced in the form of heat and light.
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decomposition reaction
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When a substance is broken down into two or more simpler substances in a chemical reaction.
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double-displacement reaction
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When the positive ion of one compound replaces the positive ion of the other compound to form two new compounds during a chemical reaction.
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electrons
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Subatomic particles that carry a negative charge.
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insoluble
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Incapable of being dissolved.
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ion
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An atom that has either gained or lost electrons and so has an electrical charge.
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ionic compound
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A compound, usually formed from a metal and a nonmetal atom, that results from ionic bonding.
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oxidation
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The loss of electrons.
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oxidation-reduction (redox) reaction
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The transfer of electrons from one substance to another during a chemical reaction.
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precipitate
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A compound that doesn't dissolve in water.
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precipitation reaction
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Reaction between two aqueous solutions that results in the formation of a solid compound.
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reduction
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The gain of electrons.
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single-displacement reaction
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When one element replaces another element in a compound during a chemical reaction.
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solubility
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The ability of a substance to be dissolved.
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soluble
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Capable of being dissolved.
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acid
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A substance that produces hydrogen ions in a water solution.
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base
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A substance that forms hydroxide ions in a water solution.
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concentration
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The amount of an acid or base that's dissolved in a solution.
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dilute
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To lessen the concentration of a solution by adding more water.
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dissociate
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A process in which an ionic compound separates into its positive and negative ions.
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indicator
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An organic compound that changes color when exposed to an acid or a base.
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ion
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An atom or group of atoms that has either gained or lost electrons and so has an electrical charge.
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litmus paper
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An indicator that shows whether a solution is acidic or basic.
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neutral solution
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A solution that's neither acidic nor basic.
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neutralization reaction
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The reaction of an acid with a base in a water solution.
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pH
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A measure of how acidic or basic a solution is.
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strength (of an acid or a base)
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The degree to which an acid or base is dissolved in a solution.
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