Worksheet #1: Writing and Balancing Formula Equations
Step 1: Write and balance each formula using SUBSCRIPTS.
Step 2: Balance the overall equation using coefficients.
1.
sulfur
+
2.
zinc
3.
hydrogen
+
nitrogen
Æ
ammonia
4.
hydrogen
+
chlorine
Æ
hydrogen chloride
5.
carbon
6.
calcium oxide
7.
phosphorus
8.
hydrochloric acid
9.
barium chloride
10.
aluminum sulfate + calcium hydroxide Æ aluminum hydroxide + calcium sulfate
11.
ethane (C2H6)
12.
aluminum oxide
+
oxygen
sulfuric acid
+
water
water
oxygen
+
Æ
Æ
Æ
hydrogen
+
hydrogen
calcium hydroxide
diphosphorus pentoxide
sulfuric acid
oxygen
+
carbon monoxide
sodium hydroxide
+
+
zinc sulfate
Æ
Æ
+
+
sulfur dioxide
Æ
Æ
aluminum
Æ
Æ
sodium chloride
barium sulfate
carbon dioxide
+
oxygen
+
+
water
+
water
hydrochloric acid
Worksheet #2: Synthesis Reactions
In synthesis reactions, two or more reactants come together to form one compound.
A + B Æ AB
Complete the following word equations, and write and balance the formula equation.
1.
calcium +
oxygen
Æ
2.
copper
+
3.
calcium oxide
4.
hydrogen
+
nitrogen
Æ
5.
hydrogen
+
chlorine
Æ
6.
silver
sulfur
7.
chromium
+
oxygen
8.
aluminum
+
bromine
9.
sodium
10.
hydrogen
+
11.
aluminum
+
+
sulfur
+
+
copper(II) sulfide
Æ
water
Æ
Æ
iodine
Æ
Æ
Æ
oxygen
oxygen
Æ
Æ
calcium hydroxide
Worksheet #3: Decomposition Reactions
In decomposition reactions, one compound will break down into two or more parts.
1.
barium carbonate
Æ
2.
magnesium carbonate
3.
potassium carbonate
4.
zinc hydroxide
5.
Iron(II) hydroxide
Æ
6.
nickel(II) chlorate
Æ
7.
sodium chlorate
8.
potassium chlorate
9.
sulfuric acid
10.
carbonic acid
11.
aluminum oxide
12.
silver oxide
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Worksheet #4: Single-Replacement Reactions
Step 1 - Write the formulas of the reactants on the left of the yield sign
Step 2 - Look at the Activity Series on page 333 to determine if the replacement can happen
Step 3 - If the replacement can occur, complete the reaction and balance it. If the reaction
cannot happen, write N.R. (no rxn) on the product side.
1.
lead +
zinc acetate
Æ
2.
iron
+
aluminum oxide
3.
silver nitrate
4.
sodium bromide
5.
aluminum bromide
+
6.
sodium iodide
bromine
7.
calcium
8.
magnesium
9.
silver
10.
potassium
11.
sodium
+
+
+
+
+
nickel
Æ
Æ
iodine
chlorine
+
nitric acid
+
water
water
Æ
Æ
Æ
Æ
Æ
Æ
hydrochloric acid
sulfuric acid
+
Æ
Æ
Worksheet #5: Double-Replacement Reactions
In these reactions, all you do is look at the names of the reactants, and "switch partners". Just
be sure that the new pairs come out with the positive ion named first, and paired with a
negative ion.
1.
aluminum iodide +
mercury(II) chloride Æ
2.
silver nitrate
+
potassium phosphate
3.
copper(II) bromide
4.
calcium acetate
5.
ammonium chloride
+
6.
calcium nitrate
hydrochloric acid
7.
iron(II) sulfide
8.
copper(II) hydroxide
9.
calcium hydroxide
10.
calcium bromide
+
+
aluminum chloride
+
+
Æ
mercury(I) acetate
acetic acid
Æ
Æ
hydrochloric acid
+
Æ
sodium carbonate
+
+
Æ
Æ
Æ
phosphoric acid
Æ
potassium hydroxide
Æ
Examine the products of the reactions on this page, and determine in each whether a gas,
water, or a precipitate is formed. Use solubility Table B.9 on page R54 at the back of your
textbook to determine the solubilities of the reaction products. If there is no gas, water, or
precipitate produced, put an "X" through the yield sign, because no reaction occurs.
Worksheet #6: Combustion Reactions
We will focus on the combustion of hydrocarbons. Hydrocarbons react with oxygen to form
carbon dioxide and water.
1.
methane (CH4)
2.
ethane (C2H6)
3.
propane (C3H8)
4.
butane (C4H10)
5.
pentane (C5H12)
6.
hexane (C6H14)
7.
ethene (C2H4)
+
8.
ethyne (C2H2)
+
9.
benzene (C6H6)
+
oxygen
+
Æ
oxygen
+
Æ
oxygen
+
oxygen
+
+
Æ
oxygen
Æ
oxygen
oxygen
+
Æ
oxygen
oxygen
Æ
Æ
Æ
Æ