Question

State the 2 difference between a physical and chemical change with an example of each

Answer 1

Answer:

In a physical change, the molecules are rearranged while their actual composition remains same. In a chemical change, the molecular composition of a substance completely changes and a new substance is formed. Some example of physical change are freezing of water, melting of wax, boiling of water, etc.

Answer 2

In a chemical change, the molecular composition of a substance completely changes and a new substance is formed. Some example of physical change are freezing of water, melting of wax, boiling of water, etc. ... In a physical change, no energy is produced. In a chemical change, energy is produced (heat, light, sound, etc.)....

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