Matching (Value 9)
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Match each item with the correct statement below. a. | activity series of metals | c. | combustion
reaction | b. | single-replacement reaction | d. | decomposition reaction |
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1.
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a list of metals in order of decreasing reactivity
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2.
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a reaction in which the atoms of one element replace the atoms of a second
element in a compound
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3.
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a reaction in which oxygen reacts with another substance, often producing heat
or light
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4.
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a reaction in which a single compound is broken down into simpler
substances
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Match each item with the correct statement below. a. | product | d. | balanced equation | b. | reactant | e. | skeleton equation | c. | chemical
equation |
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5.
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a chemical equation that does not indicate relative amounts of reactants and
products
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6.
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a starting substance in a chemical reaction
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7.
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an equation in which each side has the same number of atoms of each
element
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8.
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a new substance formed in a chemical reaction
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9.
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a concise representation of a chemical reaction
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Multiple Choice (Value 31) Identify the choice that best completes the statement or answers
the question.
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10.
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Which of the following statements is NOT correct?
a. | The only way to determine the products of a reaction is to carry out the
reaction. | b. | A single reactant is the identifying characteristic of a decomposition
reaction. | c. | Complete combustion has occurred when all the carbon in the product is in the form of
carbon dioxide. | d. | All chemical reactions can be classified as one of five general
types. |
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11.
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Which of the following statements is true about single-replacement
reactions?
a. | Any metal replaces any other metal. | c. | Two reactants produce two
products. | b. | They involve a single product. | d. | They are restricted to
metals. |
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12.
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Chemical equations ____.
a. | show how to write chemical formulas | b. | describe chemical reactions | c. | give directions for
naming chemical compounds | d. | describe only biological
changes |
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13.
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Chemical reactions ____.
a. | only occur outside living organisms | c. | create and destroy
atoms | b. | produce new substances | d. | occur only in living organisms |
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14.
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The products of a combustion reaction do NOT include ____.
a. | hydrogen | c. | water | b. | carbon dioxide | d. | carbon monoxide |
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15.
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In a double-replacement reaction, the ____.
a. | reactants are two elements | b. | products are always
molecular | c. | products are a new element and a new compound | d. | reactants are two
ionic compounds |
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16.
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A catalyst is ____.
a. | the product of a combustion reaction | b. | a solid product of a
reaction | c. | one of the reactants in single-replacement reactions | d. | not used up in a
reaction |
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17.
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The product of a combination reaction is Ba(OH) . If one
of the reactants is H O, what is the other reactant?
a. | BaO | c. | BaH | b. | BaO | d. | BaO |
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18.
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The equation 2C H OH 9O 6CO 8H O is an example of which type of reaction?
a. | single-replacement reaction | c. | combustion
reaction | b. | double-replacement reaction | d. | decomposition reaction |
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19.
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A double-replacement reaction takes place when aqueous cobalt(III) chloride
reacts with aqueous lithium hydroxide. One of the products of this reaction is ____.
a. | Co(OH) | c. | LiCl | b. | LiCo | d. | Co(OH) |
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20.
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If you rewrite the following word equation as a balanced chemical equation, what
will the coefficient and symbol for fluorine be? nitrogen trifluoride nitrogen fluorine
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21.
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What are the correct formulas and coefficients for the products of the following
double-replacement reaction? RbOH H PO
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22.
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The reaction 2Fe 3Cl 2FeCl is an
example of which type of reaction?
a. | combination reaction | c. | decomposition reaction | b. | combustion
reaction | d. | single-replacement
reaction |
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23.
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In a double-replacement reaction, ____.
a. | one of the reactants is often water | b. | the reactants are usually a metal and a
nonmetal | c. | energy in the form of heat or light is often produced | d. | the reactants are
generally two ionic compounds in aqueous solution |
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24.
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Symbols used in equations, together with the explanations of the symbols, are
shown below. Which set is correct?
a. | (g), grams | c. | (l), liters | b. | (aq), dissolved in
water | d. | (s), solid
product |
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25.
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Which of the following statements is NOT true about the decomposition of a
simple binary compound?
a. | The reactant could be an ionic or a molecular compound. | b. | The reactant is a
single substance. | c. | The products are the constituent
elements. | d. | The products are unpredictable. |
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26.
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Which of the following statements is NOT true about what happens in all chemical
reactions?
a. | New atoms are formed as products. | b. | The bonds of the reactants are broken and new
bonds of the products are formed. | c. | The starting substances are called
reactants. | d. | The ways in which atoms are joined together are
changed. |
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27.
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Which of the following statements is NOT true about double-replacement
reactions?
a. | The product may be a molecular compound. | b. | The product may
precipitate from solution. | c. | The product may be a gas. | d. | The reactant may be
a solid metal. |
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28.
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Everyday equations describe ____.
a. | biological chemistry | c. | everyday processes | b. | chemical reactions | d. | thermonuclear
reactions |
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29.
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What does the symbol in a
chemical equation mean?
a. | Heat is supplied to the reaction. | c. | A catalyst is
needed. | b. | yields | d. | precipitate |
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30.
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Which of the following is the correctly balanced equation for the incomplete
combustion of heptene, C H ?
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31.
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Which of the following is a balanced equation representing the decomposition of
lead(IV) oxide?
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32.
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What are the missing coefficients for the skeleton equation below?
Al (SO ) ( aq)
KOH( aq) ® Al(OH) ( aq) K SO ( aq)
a. | 4, 6, 2, 3 | c. | 1, 6, 2, 3 | b. | 1, 3, 2, 3 | d. | 2, 12, 4, 6 |
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Short Answer (Value 8)
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33.
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Complete and balance the following equation. Al Cl
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34.
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Complete and balance the following equation. CH O CO
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35.
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Balance the following equation. Au O Au O
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36.
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Complete and balance the following equation. Fe (SO ) Ba(OH)
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