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Chemistry Vocab

KC Watson

Chapters 9-12

1 2
4                               5          
7   8  
15             16     17      

3.a substance that inscreases the rate of of reaction by lowering the activation-energy barrier
4.a chemical change in which a single compound is broken down into two or more simpler products
6.lowest whole-number ratio of elements in a compound
9.a compound composed of two elements
10.a chemicalequation in which mass is conserved
11.a tightly bound group of atoms that behaves as a unit and has a positive or negative charge
12.a chemical equation that does not indicate the relative amounts of reactants and products
14.the number of representative particles contained in one mole of a substance
15.the mass of a mole of any substance
18.the percent by mass of each element in a compound
19.a conversion factor derived from the coefficients of a balanced chemical equation interpreted in terms of moles
20.the portion of chemistry that deals with numerical relationships in chemical reactions
21.an ion that is not directly involved in a chemical reaction
1.an ionic compound that produces hydroxide ions when dissolved in water
2.the conditions under which the volume of a gas is usually measured
5.equal volumes of gases at the same temperture and pressure equal numbers of particles
7.the amount of a substance that contains 6.02x10^23 representative particles of that substance
8.the ratio of the actual yield to the theoretical yield for a chemical reaction expressed as a percentage
13.a single atom with a positive or negative charge resulting from the loss or gain of one or more valence electrons
16.the amount of product that forms when a reaction is carried out in a laboratory
17.a compound that contains one or more hydrogen atoms and produces hydrogen ions when dissolved in water

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