Question

1:Tabulate the differences between physical and chemical changes. 2:Give an account of the changes that you often come across in a day.​

Answer 1

Answer:

Physical Change:

When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.

Chemical Change: When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.

Physical change: Physical change is a temporary change. Chemical change: A chemical change is a permanent change.

Physical change: A physical change affects only physical properties i.e. shape, size, etc.

Chemical change: Chemical change both physical and chemical properties of the substance including its composition

Physical change: physical change involves very little to no absorption of energy.

Chemical change: During a chemical reaction, absorption and evolution of energy take place

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.2. Physical change: Crushing an empty milk carton, Boiling pasta to make it soft, Dissolving sugar in your coffee

Chemical change: Burning wood.

Souring milk.

Mixing acid and base.

Digesting food.

Cooking an egg.

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