Completion
Complete each statement.
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1.
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Photosynthesis is an example of a(n) ____________________ chemical reaction in which plants use sunlight to make glucose and oxygen.
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2.
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_________________________ is a chemical process in which living things produce light.
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3.
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The general formula for a synthesis reaction is _________________________.
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4.
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When methane burns in the presence of insufficient oxygen, the products of the reaction are water and ____________________.
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5.
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Alkali metals react violently with water to form metal ions, hydroxide ions, and ____________________.
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6.
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Aluminum undergoes a single-displacement reaction with copper (II) sulfate to form aluminum sulfate and ____________________.
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7.
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Radicals react quickly to form covalent bonds with nearby substances because they have ____________________ available for bonding.
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8.
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The law of definite proportions states that a compound always contains the same ____________________ in the same ____________________.
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9.
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You are producing magnesium oxide by the reaction 2Mg + O2 ® 2MgO. If you start out with 6 moles of magnesium, you will need ____________________ moles of oxygen, and you will produce ____________________ moles of magnesium oxide.
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10.
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In a chemical reaction, the combined molar masses of the ____________________ equals the combined molar masses of the ____________________.
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11.
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A catalyst that slows a reaction is called a(n) ____________________.
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12.
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An enzyme is a(n) ____________________ that acts as a(n) ____________________ in a chemical reaction that takes place in a living thing.
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13.
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A change of color is a sign that a(n) ______________________________ is taking place.
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14.
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The changes that are visible during a chemical reaction are signs that the ____________________ in the reactants have been rearranged.
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15.
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A chemical reaction that transfers energy from the reactants to the surroundings is referred to as ____________________.
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16.
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In a(n) ____________________ reaction, the reactants are broken down into other substances.
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17.
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A substance is said to be ____________________ when it gains electrons.
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18.
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Balance the following chemical equation by filling in the correct coefficient on the right-hand side. H2 + Cl2 ® ____________________ HCl
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19.
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Suppose you were producing zinc chloride by the reaction Zn + 2HCl ® ZnCl2 + H2. If you started with 4 moles of zinc, you would need ____________________ moles of hydrogen chloride and you would produce ____________________ moles of zinc chloride.
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20.
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In the chemical equation H2 + Cl2 ® 2HCl, the mole ratios are ____________________.
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21.
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If you ____________________ the temperature of a reaction, generally you will ____________________ the rate of the reaction.
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22.
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In a state of equilibrium, a reaction and its reverse occur at the same ____________________ and at the same ____________________.
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23.
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When a reaction is at equilibrium, increasing the pressure favors the reaction that produces ____________________.
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24.
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A sign that a chemical reaction is taking place is release of energy in the form of ____________________ or ____________________.
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25.
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In a chemical reaction, atoms are ____________________, but they are not created or destroyed.
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26.
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A(n) ____________________ reaction is one in which heat is transferred from the surroundings to the reactants.
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27.
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In a combustion reaction, ____________________ is used to make reactants burn.
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28.
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A reaction that involves the transfer of ____________________ is called a(n) ______________________________ reaction.
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29.
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Balance the following chemical equation by filling in the correct coefficients. ____________________ KI + Br2 ® ____________________ KBr + I2
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30.
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In the chemical equation CH4 + O2 ® CO2 + 2H2O, for every one mole of carbon dioxide you produced, you would have ____________________ mole/moles of water.
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31.
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In the chemical equation FeS + 2HCl ® FeCl2 + H2S, the mole ratios are ____________________.
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32.
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If you ____________________ the surface area of a reactant, you will probably ____________________ the rate of the reaction.
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33.
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Equilibrium is achieved when the ____________________ and ____________________ reactions continue to take place at the same rate.
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34.
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When a reaction is at equilibrium, increasing the temperature favors the reaction that ___________________________________.
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