Reversible Reactions

Recall that the products of some chemical reactions can react again to produce the original reactants, and these are known as reversible reactions.
Explain that the direction of reversible reactions can be changed by altering the reaction conditions, such as temperature.
Describe examples of reversible reactions, such as the decomposition of ammonium chloride and the dehydration of hydrated copper(II) sulfate.
Recognize the symbol used to represent reversible reactions in chemical equations: $A + B \rightleftharpoons C + D$

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