Question

any four difference between chemical and physical change​

Answer 1

Answer:

1. In physical change, no new substance is formed whereas in chemical change one ir mire new substance is formed.

2. physical change is a temporary change whereas a chemical change is a permanent change.

3. physical changes are reversible whereas chemical changes are irreversible.

4. Example of physical change - melting of ice

Example of chemical change - rusting

Explanation:

Hope this helps you!!

Answer 2

Answer:

A physical change results in the same atoms and molecules while a chemical change results in the formation of different molecules with different properties.

Explanation:

Physical changes are changes in the formation or state of molecules and atoms. The arrangement of the molecules and atoms is different after the change but the chemical composition of the reactants and produces are the same.

Chemical changes are changes in the chemical bonds and composition of the the atoms and molecules. The chemical composition and formulas of the reactants and the products are different.

Significant clues as to the reaction being a chemical change are changes in color, release or absorption of a large amounts of energy. formation of a precipitant.

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