You are given some candle wax. Can you make a candle doll from it? What kind of change is this?

One Line Answer

Yes, I can. It is a physical (reversible) change.

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Chapter 3 Changes Around Us
Evaluation | Q VI. 2. | Page 40

Classify the following as chemical or physical change:

Dissolving common salt in water.

Fill in the blank.

A new substance is formed in a ............... change.

Melting of solid (wax) is a physical change.

Tick the most appropriate answer.

Rising and setting of the sun at a given place is a

Classify the following as physical or chemical changes :

Which of the following are physical changes and which are chemical changes ?

Glowing of an electric bulb

Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.

State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.

A change in which matter undergoes a change but the total mass of the substance is unaltered is a ______ change.

Give the reason why the following is considered as chemical changes.

An iron nail kept open in the atmosphere rusts.

Gas exists in three states as solid, liquid, and gas.