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Last updated:

April 27, 2022


Unlimited Duration


This course includes:

Unlimited Duration

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Certificate of completion

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Atoms, elements and molecules are the building blocks of everything that makes up our world, including ourselves.

In this course, Water for life, you will learn the basic chemistry of how these components work together, starting with a chemical compound we are all very familiar with water.

Course learning outcomes

After studying this course, you should be able to:

  • Read data presented in tables
  • Use scientific notation to express both large and small quantities
  • Appreciate why chemists use different models to represent molecules
  • Identify the number and type(s) of atom present in a molecule from its chemical formula
  • Identify the reactants and products of a reaction in a chemical equation.

Course Curriculum

  • Introduction 00:05:00
  • Learning outcomes 00:07:00
  • The power of water 00:15:00
    • Where water occurs and how we measure it 00:40:00
    • Going up: using scientific notation for large numbers 00:40:00
    • Using a calculator for scientific notation 00:30:00
    • The study of a raindrop 00:20:00
    • Going down: using scientific notation for small numbers 00:35:00
    • What is water made of? 00:25:00
    • (a) Using Lego as a model 00:10:00
    • (b) Using spheres 00:30:00
    • The ‘salt’ in seawater 00:25:00
    • What are compounds? 01:00:00
    • Inside the atom 01:00:00
    • Molecules and covalent bonding 01:00:00
    • Introduction 00:05:00
    • Chemical symbols 00:25:00
    • Chemical formulas 00:30:00
    • Chemical equations and chemical reactions 00:40:00
    • Writing a chemical equation to describe a chemical process 00:40:00
    • Ions and ionic bonding 02:00:00
    • Water and its impurities 00:40:00
    • Conclusion 00:15:00

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Open University UK