Question

1. What is the role of Pressure during Condensation?

3. Distinguish between Chemical & Physical changes with example.

Please answer.
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Answer 1

Answer:

1.Ans. During condensation, pressure increases which result in a decrease in volume. The temperatures remain constant as there is no change to the kinetic energy of molecules but only a decrease in the potential energy (i.e greater forces of attraction between molecules when the phase changes).

3.Ans. Physical change is a temporary change. A chemical change is a permanent change. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

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Answer 2

Answer:

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