What is a chemical change?
A chemical change is a change in which a substance goes through a change in chemical properties such as composition.
What is a physical change?
A physical change is a change in which the substance undergoes a change in physical properties such as boiling point, melting point, density.
What is the difference between chemical and physical change?
A chemical change is a change in which a substance goes through a change in chemical properties such as composition.
What is a physical change?
A physical change is a change in which the substance undergoes a change in physical properties such as boiling point, melting point, density.
What is the difference between chemical and physical change?
- In a physical change there is no change in mass whereas in a chemical change there is a change in mass.
- In a physical change heat and light are not evolved whereas in a chemical change there is an evolution of heat and light.
- In a physical change there is no change in composition whereas in a chemical change there is a difference in composition.
- In a physical change the substance formed retains its original properties whereas in a chemical change the new substance does not retain its original properties.
Examples of chemical change.
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