There are many types of chemical changes. The changes are classified based on the nature of the change. The various types of chemical changes are:
- Simple reaction (two chemical substances join to form 1 new compound)
- Decomposition reaction (1 chemical substance breaks down to form 2 or more simpler substance)
- Displacement reaction (a reaction in which an element is replaced by another element which is higher up in the reactivity series)
- Double decomposition reaction (a reaction in which the chemical compounds exchange radicals or ions to form new substances)
- Reversible reaction (a reaction which can be reversed on change in condition)
- Catalytic reaction (a reaction in which a catalyst is involved which alters the speed of the reaction)
- Thermal dissociation (a reversible decomposition reaction which takes place in the presence of heat)
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