Give two differences between physical and chemical changes based on: U(3m) a) Nature of change b) Formation of products c) Energy change (Guys I am in exam please tell fast)
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Answer:
1. In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.
2.Products are the species formed from chemical reactions. During a chemical reaction reactants are transformed into products after passing through a high energy transition state. This process results in the consumption of the reactants. ... The materials are reactive and reactants are rearranging during a chemical reaction.
3.Energy can change from one form to another. For example chemical energy might change to heat energy. Light energy can change to chemical energy. For example in the garden there are plants and flowers growing. ... The energy may be changed into different sorts, but it is not lost or made.
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