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27 Cards in this Set
- Front
- Back
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chemical reaction
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one or more substances are converted into new substances.
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reactants
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substances that react
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products
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the new substances that are produced.
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chemical equation
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way to describe a chemical reaction using symbols.
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Basic principle of Chemistry
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matter cannot be created or destroyed.
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balanced chemical equation
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has the same number of atoms of each element on both sides of the equation.
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combustion reaction
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occurs when a substance reacts with oxygen to produce energy in the form of heat and light.
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synthesis reaction
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two or more substances to form to form another substance
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decomposition reaction
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occurs when one substance breaks down, or decomposes into two or more substances.
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single-displacement reaction
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when one element replaces another in a compound
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double displacement reaction
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the positive ion of one compound replaces the positive ion of the other to form two new compounds.
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activation energy
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minimum amount of energy needed to start a reaction
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endothermic reaction
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when the energy needed is in the form of heat
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exothermic reaction
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when the energy given off in a reaction is in the form of heat
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rate of reaction
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speed at which reactants are consumed and products are produced in a given reaction.
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catalyst
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speeds up a chemical reaction
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inhibitors
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substances that are used to slow down a reaction.
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solution
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mixture that has the same composition,color,density and even taste throughout
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solute
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substance being dissolved
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solvent
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substance doing the dissolving
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aqueous
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a solution in which water is the solvent
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solubility
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tells how much solute can dissolve in a solvent at a particular temp.
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a concentrated solution
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has a large amnt of dissolved solute.
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Acids
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release H+ when dissolved in water. Sour
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Base
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OH-, bitter taste
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strong acid
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almost 100% of the acid molecules dissociate into ions.
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weak acid
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small fraction dissociate into ions.
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