Question

explain by giving an activity the main difference between physical ans chemical change​

Answer 1

Answer:

A physical change involves changes in the appearance of the material but does not involve creation of new materials. A chemical change involves the formation of new materials. Chemical reactions are characterized by a number of changes, including color changes and the formation of a precipitate or gas.

Explanation:

Answer 2

Explanation:

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Physical Change :

1. When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged. .
2. .Physical change is a temporary change.
3. . A Physical change affects only physical properties i.e. shape, size, etc.
4. A physical change involves very little to no absorption of energy.
5. Some examples of physical change are freezing of water, melting of wax, boiling of water, etc
6. physical changes do not involve the production of energy.

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Chemical change

1. When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances
2. A chemical change is a permanent change.
3. Chemical change both physical and chemical properties of the substance including its composition
4. During a chemical reaction, absorption and evolution of energy take place.
5. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
6. Chemical changes usually involve the production of energy (which can be in the form of heat, light, sound, etc.)