Chemistry - Chapter 7: Chemical Reactions (completion)

Complete each statement.


Photosynthesis is an example of a(n) ____________________ chemical reaction in which plants use sunlight to make glucose and oxygen.



_________________________ is a chemical process in which living things produce light.



The general formula for a synthesis reaction is _________________________.



When methane burns in the presence of insufficient oxygen, the products of the reaction are water and ____________________.



Alkali metals react violently with water to form metal ions, hydroxide ions, and ____________________.



Aluminum undergoes a single-displacement reaction with copper (II) sulfate to form aluminum sulfate and ____________________.



Radicals react quickly to form covalent bonds with nearby substances because they have ____________________ available for bonding.



The law of definite proportions states that a compound always contains the same ____________________ in the same ____________________.



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.



In a chemical reaction, the combined molar masses of the ____________________ equals the combined molar masses of the ____________________.



A catalyst that slows a reaction is called a(n) ____________________.



An enzyme is a(n) ____________________ that acts as a(n) ____________________ in a chemical reaction that takes place in a living thing.



A change of color is a sign that a(n) ______________________________ is taking place.



The changes that are visible during a chemical reaction are signs that the ____________________ in the reactants have been rearranged.



A chemical reaction that transfers energy from the reactants to the surroundings is referred to as ____________________.



In a(n) ____________________ reaction, the reactants are broken down into other substances.



A substance is said to be ____________________ when it gains electrons.



Balance the following chemical equation by filling in the correct coefficient on the right-hand side. H2 + Cl2 ® ____________________ HCl



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.



In the chemical equation H2 + Cl2 ® 2HCl, the mole ratios are ____________________.



If you ____________________ the temperature of a reaction, generally you will ____________________ the rate of the reaction.



In a state of equilibrium, a reaction and its reverse occur at the same ____________________ and at the same ____________________.



When a reaction is at equilibrium, increasing the pressure favors the reaction that produces ____________________.



A sign that a chemical reaction is taking place is release of energy in the form of ____________________ or ____________________.



In a chemical reaction, atoms are ____________________, but they are not created or destroyed.



A(n) ____________________ reaction is one in which heat is transferred from the surroundings to the reactants.



In a combustion reaction, ____________________ is used to make reactants burn.



A reaction that involves the transfer of ____________________ is called a(n) ______________________________ reaction.



Balance the following chemical equation by filling in the correct coefficients. ____________________ KI + Br2 ® ____________________ KBr + I2



In the chemical equation CH4 + O2 ® CO2 + 2H2O, for every one mole of carbon dioxide you produced, you would have ____________________ mole/moles of water.



In the chemical equation FeS + 2HCl ® FeCl2 + H2S, the mole ratios are ____________________.



If you ____________________ the surface area of a reactant, you will probably ____________________ the rate of the reaction.



Equilibrium is achieved when the ____________________ and ____________________ reactions continue to take place at the same rate.



When a reaction is at equilibrium, increasing the temperature favors the reaction that ___________________________________.