Investigating Chemical Reactions – Worksheet


Worksheet to accompany the online lesson Investigating Chemical Reactions.

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investigating chemical reactions worksheet


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Worksheet Contents

  • This worksheet covers:
  • Energy and the breaking and forming of chemical bonds
  • Exothermic and endothermic reactions
  • Spontaneous and non-spontaneous reactions
  • Combination reactions
  • Decomposition reactions
  • Displacement reactions
  • Combustion reactions
  • Testing for gases produced during chemical reactions:
  • Hydrogen gas
  • Oxygen gas
  • Carbon dioxide gas
  • Includes:
  • Unit outline.
  • Cloze activity (fill in the blanks).
  • Short-answer questions.
  • Extension questions.
  • Topics for further research.
  • Teacher version containing complete answers.
  • Aligned to the Australian Year 8 Science curriculum.
  • 7 pages.

Learning Outcomes

  • By the end of this worksheet students will be able to:
  • ☑   Describe the rearrangement of atoms and molecules during chemical reactions.
  • ☑   Explain why reactants and products of chemical reactions have the same mass.
  • ☑   Explain why chemical bonds are broken and formed during chemical reactions.
  • ☑   Describe energy changes in chemical reactions.
  • ☑   Describe exothermic and endothermic chemical reactions.
  • ☑   Describe spontaneous and non-spontaneous chemical reactions.
  • ☑   Classify reactions as combination, decomposition, displacement or combustion.
  • ☑   Describe tests for the presence of oxygen, hydrogen and carbon dioxide gas.


This resource is also included in the Year 8 Chemistry PDF Workbook.


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