Question

State one basic difference between a physical and chemical change a​

Answer 1

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• A change in which the molecules are rearranged, but their internal composition remains same is called Physical Change.
• Some common examples of physical change vaporisation, condensation, freezing/melting/boiling of water.

Answer 2

Physical change

• No new substance is formed only the physical properties of the substance are changes
• The change is temporary
• The change is reversible
• Specific properties do not change

Chemical change

• New substances are formed with entirely new properties
• The change is permanent
• The change is irreversible
• Specific properties of the substance charge completely