Science 20F
Chemistry Practice
Mr. Lloyd
Kelvin High School
Name:
Science 20F Chemistry Practice
Chemical Reactions.
Question #1:
Balance the skeleton equation given for the chemical reaction given below and then identify what type
of chemical reaction it is and whether or not the reaction is exothermic or endothermic
____ Ca(HCO3)2  ____ Ca(OH)2
+
____CO2
Chemical reaction type:
Exothermic or Endothermic:
Question #2:
Write a balanced chemical equation for the chemical reaction given below and then identify what type
of chemical reaction it is and whether or not the reaction is exothermic or endothermic
____ C5H12O5 + ____ O2  ____ CO2 + ____ H2O
Chemical reaction type:
Exothermic or Endothermic:
Science 20F
Chemistry Practice
Mr. Lloyd
Kelvin High School
Name:
Question #3:
Write a balanced chemical equation for the chemical reaction given below and then identify what type
of chemical reaction it is and whether or not the reaction is exothermic or endothermic
Tin reacts with bromine gas to produce tin (II) bromide and thermal energy
Balanced Chemical Equation:
Chemical reaction type:
Exothermic or Endothermic:
Science 20F
Chemistry Practice
Mr. Lloyd
Kelvin High School
Name:
Question #4:
Write a balanced chemical equation for the chemical reaction given below and then identify what type
of chemical reaction it is and whether or not the reaction is exothermic or endothermic
Zinc pellets react with Hydrogen Chloride to produce Zinc Chloride crystals,
Hydrogen Gas and Heat
Balanced Chemical Equation:
Chemical reaction type:
Exothermic or Endothermic
Science 20F
Chemistry Practice
Mr. Lloyd
Kelvin High School
Name:
Question #5:
Write a balanced chemical equation for the chemical reaction given below and then identify what type
of chemical reaction it is and whether or not the reaction is exothermic or endothermic
Hydrogen Sulfate reacts with Nickel (III) Hydroxide to produce Nickel (III)
Sulfate, heat and water
Balanced Chemical Equation:
Chemical reaction type:
Exothermic or Endothermic:
Science 20F
Chemistry Practice
Mr. Lloyd
Kelvin High School
Answers:
Question #1:
Ca(HCO3)2  Ca(OH)2 + 2CO2
Decomposition Reaction
Endothermic
Question #2:
2C5H12O5 + 11O2  10CO2 + 12H2O
Combustion (Biological Combustion)
Exothermic
Question #3:
Sn + Br2  SnBr2
Synthesis Reaction
Exothermic
Question #4:
Zn + 2HCl  ZnCl2 + H2
Single Displacement Reaction
Exothermic
Question #5:
H2SO4 + Ni(OH)3  Ni2(SO4)3 + H2O
Double Displacement Reaction (Neutralization)
Exothermic
Name: