Practice Test
 Chemistry In Action (REACTIONS) Test

Directions:  Number a piece of paper from 1 to 37.  Answer each question, writing your answers on
your paper.  The correct answers to the questions appear at the end of the practice test.

Match the terms on the right with the phrases on the left.

_____1.  A chemical reaction in which one substance breaks down                     A.  Decomposition
               to form two or more simpler substances.                                              B.  Double Replacement
_____2.  The substances on the left of the yield sign.                                           C.  Endothermic
_____3.  A chemical change in which energy is absorbed.                                   D.  Exothermic
_____4.  A chemical reaction in which both members of                                     E.  Products
               the reactants change partners.                                                              F.  Reactants

List three evidences of chemical reactions occurring;
 5.
 6.
 7.

BALANCE the following equations.

8. Identify the type of reaction below. _______________

9. _____Cl₂ + 10._____AlI₃ ------->  11._____ AlCl₃  +  12.____ I₂

13. Identify the type of reaction below. _______________

14. _____C₃H₈ + 15._____O₂  ------> 16._____ CO₂  +  17.____ H₂0

Give the BALANCED FORMULA EQUATION for each of the following word equations.

18. Identify the type of reaction below. _________________

        chromium     +          oxygen               ------->       chromium III oxide

19.____20._____ +  21._____22.______  --------> 23._____24._____
 

COMPLETE and BALANCE the following equations.

25. Identify the type of reaction below. __________

26. ____ AsCl₃   +  27. ____ H₂S  ------->  28.____ 29._____  +   30.____ 31.________
 
 

Use the following equation in answering questions  32 - 37.

                 32._____ KClO_3(s)  +     heat    ------->  33._____ KCl_(s) +       34.______ O_2(g)

35. Classify the above reaction.
36.  If 100 grams of KClO₃ are heated, how many liters of O₂ would you expect to be formed?
37.  Is this reaction endothermic or exothermic?
 

ANSWERS

1.  A
2.  F
3.  C
4.  B
5-7 Any of the following
        color change
        gas given off (bubbles)
        precipitate formed
        temperature (heat) change
        light given off
        electrical potential generated

8.  single replacement
9.  3
10.  2
11.  2
12.  3
13.  combustion
14.  1
15.  5
16.  3
17.  4
18.  composition
19.  4
20.  Cr
21.  3
22.  O₂
23.  2
24.  Cr₂O₃
25.  double replacement
26.  2
27.  3
28.  1
29.  As₂S₃
30.  6
31.  HCl
32.  2
33.  2
34.  3
35.  decomposition
36.  27.4 liters
37.  endothermic