Question

What is a Chemical and physical and write there differences​

Answer 1

Explanation:

In chemical changes :

- A new product is form.

- involves production of energy

- Ex : Burning of fuel.

In physical changes:

- No new products is formed.

- production of energy not required

- Ex: liquid Water changes into ice

Answer 2

Explanation:

Three differences :

Physical Change

1. In a physical change, no new substance is formed.
2. Physical change is easily reversible i.e original substance can be recovered.
3. Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.

Chemical Change

1. A chemical change is always accompanied by one or more new substance(s)
2. Chemical changes are irreversible i.e. original substance cannot be recovered.
3. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

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What is a Chemical Change

Ans : A chemical change happens when one chemical substance is transformed into one or more different substances.

What is a physical change

Ans : A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not.