Question

2. State the differences between physical change and chemical change.

Plsss quickly can any one tell this plssssss​

Answer 1

Physical Change

Physical Change only change the appearance of a substance, not its chemical composition.

Chemical Change

Chemical Change cause a substance to change into an entirely substance with a

new chemical formula.

Answer 2

Physical change :-

The process in which no new chemical substance is formed is called physical change.

eg.

• melting of ice
• evapouration of water
• rusting

Process :-

On heating :-

⬛ solid ➝ 〰liquid ➝ ♨gas

On cooling :-

⬛ solid ⬅ 〰liquid ⬅ ♨gas

Chemical change :-

The process in which new chemical substance is formed withbdiffrent chemical properties is called physical change.

eg.

• turning brown of sugar
• cooking of food
• digestion

Process :-

Burrning of magnesium ribbon :-

Magnesium + Oxygen ➝ Magnesium oxide

2Mg + O2 ➝ 2MgO

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