In this change, 2 or more elements are combined to make a new substance, Rust is an example of this type of change, This change results in something being broken down in to separate Molecules, , Oxygen is always in this type of chemical change, Wood + oxygen =  Ash + smoke + C02 and Energy (heat), Cellular respiration is an example of this type of Chemical Change, Photosynthesis , An explosion, AB = A + B.

Types of chemical changes - Name the type

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