Balancing Chemical Equations - 1 Workbook 1 Page 21 Balancing Chemical Equations - 1

1) Balance the following chemical equations: 2 2 Mg + O2 → MgO O Mg O Mg Mg O Mg

2 Cl Cl Cl H Zn H Zn H Zn + HCl → H2 + ZnCl2 1) Balance the following chemical equations: 2 Zn + HCl → H2 + ZnCl2 Cl Zn H Zn Cl H Cl H

2 O O O H Ca H H Ca H Ca + H2O → H2 + Ca(OH)2 1) Balance the following chemical equations: 2 Ca + H2O → H2 + Ca(OH)2 O H Ca Ca H O H H O

2 2 2 O O O O H K H K H K H K H K + H2O → H2 + KOH 1) Balance the following chemical equations: 2 2 2 K + H2O → H2 + KOH H O K H O H K H O O H K K

2 3 2 O O O O O Al Al Al Al Al + O2 → Al2O3 1) Balance the following chemical equations: 2 3 2 Al + O2 → Al2O3 Al Al O O Al Al O O O

4 3 2 O O O O O Al Al Al Al Al Al Al + O2 → Al2O3 1) Balance the following chemical equations: 4 3 2 Al + O2 → Al2O3 Al Al O O Al Al Al O O Al O

3 3 K Cl Al K Al Cl K Cl K K K Cl K + AlCl3 → KCl + Al 2) Write a balanced chemical equation for each of the following chemical reactions: The element potassium, K, reacts with aluminum chloride, AlCl3, and produces potassium chloride, KCl, and aluminum, Al. 3 3 K + AlCl3 → KCl + Al Cl Al Cl K K Al Cl K K K Cl K

4 2 O O O Na Na Na Na Na Na Na + O2 → Na2O 2) Write a balanced chemical equation for each of the following chemical reactions: Sodium, Na, will react with oxygen gas, O2, and produce sodium oxide, Na2O. 4 2 Na + O2 → Na2O O Na Na O Na Na O Na Na

2) Write a balanced chemical equation for each of the following chemical reactions: Hydrogen peroxide, H2O2, will decompose into oxygen gas ,O2, and water. 2 2 H2O2 → O2 + H2O H O H O O H O H O

2 3 2 F F F F F Al Al Al Al Al + F2 → AlF3 2) Write a balanced chemical equation for each of the following chemical reactions: Aluminum metal, Al, reacts with fluorine gas, F2, in a chemical reaction that produces aluminum fluoride, AlF3. 2 3 2 Al + F2 → AlF3 Al F F Al F Al F Al F

2 O O O O O Na Na C C C Na C H H H NaHCO3 → Na2CO3 + H2O + CO2 2) Write a balanced chemical equation for each of the following chemical reactions: Sodium bicarbonate (baking soda), NaHCO3, when heated, decomposes into sodium carbonate, Na2CO3, water, H2O, and carbon dioxide gas, CO2. 2 NaHCO3 → Na2CO3 + H2O + CO2 O C Na H O C Na H O O C H O C Na