GCSE SCIENCE CHEMISTRY HIGH SCHOOL - Reversible Reactions - Equilibrium - Closed System - Dynamic

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When a reaction is reversible,
it means that it can go both forwards and backwards.

The forward reaction is the one we want,
in which reactants are converted into products.
The backward reaction is where the products
become changed back into the original reactants.
Reactions in both directions occur at the same time.

In a closed system, after awhile an equilibrium mixture is reached,
where a certain proportion of the mixture exists as reactants,
and the rest exists as products. A closed system means that
none of the products or reactants can escape to the outside environment.
It is like being inside a bottle with a cork in the top.

When equilibrium has been reached,
it does not mean that the reactions have stopped.
It means that the forward reaction is making products at
the same rate that the backward reaction is making reactants.
It is said to be a dynamic equilibrium. Dynamic means moving or
changing, to remind you that the reaction has not stopped.

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