Chemical Reactions Pre-assessment

14 Questions  I  By Jkrug
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1.  The equation H3PO4 + 3KOH  --> K3PO3 + 3H2O is an example of which type of reaction?
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B.
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D.
2.  A net ionic equation
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B.
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D.
3.                       Which of the following combinations of symbol and explanation of symbol is correct when used in a chemical equation?
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B.
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D.
4.  When the equation    Fe  +  Cl2   à FeCl3 is balanced, what is the coefficient for Cl ?
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B.
C.
D.
5.  The equation Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g) is an example of which type of reaction?
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B.
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D.
6.  Which of the following is the correct skeleton equation for the reaction that takes place when solid phosphorus combines with oxygen gas to form diphosphorus pentoxide?
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7.                      When the equation   KClO3 (s)  à  KCl (s) +  O2 (g)  is balanced, the coefficient of KClO3 is
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B.
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D.
8.  Which of the following statements is true about what happens in all chemical reactions?
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9.  In the chemical equation    H<sub>2</sub>O<sub>2</sub>  à  H<sub>2</sub>O   +  O<sub>2</sub>f       the  O<sub>2</sub>  is a ____.
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B.
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D.
10.  When the following equation is balanced, what is the coefficient for HCl? Mg(s)  +  HCl (aq) à   MgCl2 (aq) + H2 (g)
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B.
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D.
11.                       In a combustion reaction, one of the reactants is
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12.                  The reaction 2Fe  + 3Cl2   --> 2FeCl3 is an example of which type of reaction?
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B.
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D.
13.  Chemical reactions
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14.  What does the  triangle symbol  above the arrow in a chemical equation mean?
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D.
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