Enthalpy change
The amount of heat energy gained or lost by a chemical system when a process or reaction takes place at constant pressure.
Glossary
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Equilibrium
A reversible chemical reaction reaches equilibrium when the concentrations of the reactants and products are constant.
Glossary
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Types of Weather: Introduction
How the movement of air is at the heart of all weather.
CURRICULUM
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Earthly Treasures: Precious Gemstones
How are emeralds, rubies and sapphires formed?
CONTEXT
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Reversible reaction
A reaction where the products of the initial reaction themselves react.
Glossary
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Fertilisation
Find out why the egg and sperm have to race against time to begin a new life.
CURRICULUM
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