CBSE Class 10 Answered
Give 10 properties of chemical &physical changes?
Asked by RITHIKJAISWAL RITHIK | 11 Apr, 2014, 07:53: PM
Expert Answer
- Physical Change: A change which alters some physical properties (e.g. colour, state, texture, magnetic or electrical conditions, density) etc. and does not involve a change in the molecular structure, i.e. no new substance is formed.
- Chemical Change: A change which alters the specific properties of a material by bringing about a change in which the original substance gives rise to one or more new substances with different composition and properties.
|
Physical change |
Chemical change |
Characteristics |
Energy required for completion of a physical change is released when the change is reversed. Example: Ice changes to water.
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Energy in the form of heat, light, pressure etc. is required for a chemical change. |
Examples |
The change of state of matter
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Chemical reactions taking place
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Answered by | 12 Apr, 2014, 02:07: PM
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