BALANCING CHEMICAL EQUATIONS WORKSHEET
(REMEMBER PRACTICE MAKES PERFECT)
1. _____ Zn (s) + _____ AgNO3 (aq) → _____ Zn(NO3)2 (aq) + _____ Ag (s)
2. _____ N2 (g) + _____ H2 (g) → _____ NH3 (g)
3. _____ NaCl (aq) + _____ AgC2H3O2 (aq) → _____ NaC2H3O2 (aq) + _____ AgCl (s)
4. _____ Mg(OH)2 (aq) + _____ H3PO4 (aq) → _____ H2O (l) + _____ Mg3(PO4 )2 (aq)
5. _____ HNO3 (aq) + _____ Ni (s) → _____ Ni(NO3)2 (aq) + _____ H2 (g)
6. _____ Ba(HCO3)2 (s) → _____ BaCO3 (s) + _____ H2O (g) + _____ CO2 (g)
7. _____ BaCl2 (aq) + _____ Na2SO4 (aq) → _____ NaCl (aq) + _____ BaSO4 (s)
8. _____ Al2(CO3)3 (s) → _____ Al2O3 (s) + _____ CO2 (g)
9. _____ Ca (s) + _____ H2O (l) → _____ Ca(OH)2 (aq) + _____ H2 (g)
10. _____ LiHCO3 (s) → _____ Li2CO3 (s) + _____ H2O (g) + _____ CO2 (g)
11. _____ N2 (g) + _____ O2 (g) → _____ N2O5 (g)
12. _____ MgBr2 (aq) + _____ KOH (aq) → _____ KBr (aq) + _____ Mg(OH)2 (s)
13. _____ Mn (s) + _____ CuCl (aq) → _____ Cu (s) + _____ MnCl2 (s)
14. _____ Zn (s) + _____ S8 (s) → _____ ZnS (s)
15. _____ NaOH (aq) + _____ H2SO4 (aq) → _____ H2O (l) + _____ Na2SO4 (aq)
16. _____ K (s) + _____ H2O (l) → _____ KOH (aq) + _____ H2 (g)
17. _____ C5H12 (l) + _____ O2 (g) → _____ H2O (g) + _____ CO2 (g)
18. _____ KOH (aq) + _____ H2CO3 (aq) → _____ H2O (l) + _____ K2CO3 (aq)
19. _____ C4H8O2 (l) + _____ O2 (g) → _____ H2O (g) + _____ CO2 (g)
20. _____ Al (s) + _____ S8 (s) → _____ Al2S3 (s)
TYPES OF REACTION
What are the 5 different types of reactions and write the chemical equation given in class?
1. ____________________________ _________________________________
2. ____________________________
_________________________________
3. ____________________________
_________________________________
4. ____________________________
_________________________________
5. ____________________________
_________________________________
For the 20 reactions above write which of the 5 types of reaction it is:
1. ___________________
8._____________________
15.___________________
2. ___________________
9. _____________________ 16. __________________
3. ___________________
10. ____________________ 17. __________________
4. ___________________
11. ____________________ 18. __________________
5. ___________________
12. ____________________ 19. __________________
6.___________________ _
13. ____________________ 20. __________________
7. ____________________
14._____________________
BALANCING CHEMICAL EQUATIONS WORKSHEET
(REMEMBER PRACTICE MAKES PERFECT)
1. _____ Zn (s) + _____ AgNO3 (aq) → _____ Zn(NO3)2 (aq) + _____ Ag (s)
2. _____ N2 (g) + _____ H2 (g) → _____ NH3 (g)
3. _____ NaCl (aq) + _____ AgC2H3O2 (aq) → _____ NaC2H3O2 (aq) + _____ AgCl (s)
4. _____ Mg(OH)2 (aq) + _____ H3PO4 (aq) → _____ H2O (l) + _____ Mg3(PO4 )2 (aq)
5. _____ HNO3 (aq) + _____ Ni (s) → _____ Ni(NO3)2 (aq) + _____ H2 (g)
6. _____ Ba(HCO3)2 (s) → _____ BaCO3 (s) + _____ H2O (g) + _____ CO2 (g)
7. _____ BaCl2 (aq) + _____ Na2SO4 (aq) → _____ NaCl (aq) + _____ BaSO4 (s)
8. _____ Al2(CO3)3 (s) → _____ Al2O3 (s) + _____ CO2 (g)
9. _____ Ca (s) + _____ H2O (l) → _____ Ca(OH)2 (aq) + _____ H2 (g)
10. _____ LiHCO3 (s) → _____ Li2CO3 (s) + _____ H2O (g) + _____ CO2 (g)
11. _____ N2 (g) + _____ O2 (g) → _____ N2O5 (g)
12. _____ MgBr2 (aq) + _____ KOH (aq) → _____ KBr (aq) + _____ Mg(OH)2 (s)
13. _____ Mn (s) + _____ CuCl (aq) → _____ Cu (s) + _____ MnCl2 (s)
14. _____ Zn (s) + _____ S8 (s) → _____ ZnS (s)
15. _____ NaOH (aq) + _____ H2SO4 (aq) → _____ H2O (l) + _____ Na2SO4 (aq)
16. _____ K (s) + _____ H2O (l) → _____ KOH (aq) + _____ H2 (g)
17. _____ C5H12 (l) + _____ O2 (g) → _____ H2O (g) + _____ CO2 (g)
18. _____ KOH (aq) + _____ H2CO3 (aq) → _____ H2O (l) + _____ K2CO3 (aq)
19. _____ C4H8O2 (l) + _____ O2 (g) → _____ H2O (g) + _____ CO2 (g)
20. _____ Al (s) + _____ S8 (s) → _____ Al2S3 (s)
TYPES OF REACTION
What are the 5 different types of reactions and write the chemical equation given in class?
6. ____________________________ _________________________________
7. ____________________________
_________________________________
8. ____________________________
_________________________________
9. ____________________________
_________________________________
10. ____________________________
_________________________________
For the 20 reactions above write which of the 5 types of reaction it is:
1. ___________________
8._____________________
15.___________________
2. ___________________
9. _____________________ 16. __________________
3. ___________________
10. ____________________ 17. __________________
4. ___________________
11. ____________________ 18. __________________
5. ___________________
12. ____________________ 19. __________________
6.___________________ _
13. ____________________ 20. __________________
7. ____________________
14._____________________
Chemical formulae and Chemical Equation Study Sheet
Please answer the following questions. Write the answers into your exercise books.
Q1 Use the essential ions sheet to work out the formulae of the following
Sodium
bromide
Lithium
fluoride
Ammonium
carbonate
Potassium
Iron(II)
hydrogencarbonate sulphate
Silver oxide
Chromium
hydroxide
Lithium hydroxide
Barium oxide
Aluminium
nitrate
Magnesium
carbonate
Iron(III)
sulphide
Hydrogen
hydroxide
Hydrogen
sulphate
Chromium
sulphate
Q2. A balanced chemical equation can be written in four steps.
1. Write the reaction in words,
2. Change the chemical names into their correct symbols and formulae.
3. Include the physical states and
4. finally balance.
The following questions relate to these four steps.
a. What symbols should we use to describe the physical states?
b. Chemists and other scientists always balance chemical equations. Please explain why
this is so important. (Hint, refer to the law of conservation of mass)
PART B, read the following statements and write balanced chemical equations. The first has
been completed as an example
Example grey sodium metal was added to colourless water. The metal reacts sizzling on the
surface. It dissolves producing sodium hydroxide and it produces some hydrogen gas
Sodium + water = sodium hydroxide + hydrogen
Na + H20 = NaOH + H2
Na(s) + H20 (l) = NaOH (aq) + H2 (g).
2Na(s) + 2H2O (l) = 2NaOH (aq) + H2 (g)
Try these:
1. Some grey magnesium ribbon was added to colourless dilute hydrochloric acid. The
metal dissolves producing magnesium chloride and produces some hydrogen gas.
2. Some zinc metal is added to copper(11) sulphate solution. The zinc becomes coated with
copper and colourless zinc sulphate solution is produced.
3. Some colourless hydrogen gas is mixed with colourless oxygen gas. The mixture is
sparked and it explodes producing steam which condenses to liquid water.
4. Magnesium ribbon is burnt in carbon dioxide gas. It burns splattering as it goes. Black
carbon is produced and some magnesium oxide solid.
Chemical formulae and Chemical Equation Study Sheet
Please answer the following questions. Write the answers into your exercise books.
Q1 Use the essential ions sheet to work out the formulae of the following
Sodium
bromide
Lithium
fluoride
Ammonium
carbonate
Potassium
Iron(II)
hydrogencarbonate sulphate
Silver oxide
Chromium
hydroxide
Lithium hydroxide
Barium oxide
Aluminium
nitrate
Magnesium
carbonate
Iron(III)
sulphide
Hydrogen
hydroxide
Hydrogen
sulphate
Chromium
sulphate
Q2. A balanced chemical equation can be written in four steps.
5. Write the reaction in words,
6. Change the chemical names into their correct symbols and formulae.
7. Include the physical states and
8. finally balance.
The following questions relate to these four steps.
c. What symbols should we use to describe the physical states?
d. Chemists and other scientists always balance chemical equations. Please explain why
this is so important. (Hint, refer to the law of conservation of mass)
PART B, read the following statements and write balanced chemical equations. The first has
been completed as an example
Example grey sodium metal was added to colourless water. The metal reacts sizzling on the
surface. It dissolves producing sodium hydroxide and it produces some hydrogen gas
Sodium + water = sodium hydroxide + hydrogen
Na + H20 = NaOH + H2
Na(s) + H20 (l) = NaOH (aq) + H2 (g).
2Na(s) + 2H2O (l) = 2NaOH (aq) + H2 (g)
Try these:
5. Some grey magnesium ribbon was added to colourless dilute hydrochloric acid. The
metal dissolves producing magnesium chloride and produces some hydrogen gas.
6. Some zinc metal is added to copper(11) sulphate solution. The zinc becomes coated with
copper and colourless zinc sulphate solution is produced.
7. Some colourless hydrogen gas is mixed with colourless oxygen gas. The mixture is
sparked and it explodes producing steam which condenses to liquid water.
8. Magnesium ribbon is burnt in carbon dioxide gas. It burns splattering as it goes. Black
carbon is produced and some magnesium oxide solid.