Question

What is the physical state of water at----

a) 25⁰ C
b) 0⁰C
c)100⁰C​

Answer 1

Answer:

a) liquid

b)solid

c) gas

Answer 2

Explanation:

a. liquid

b. solid.

c. gas.

(a) 25 º C

• Water at 25°C is present in the liquid state.
• The water which we use for our day to day activities is in the liquid state.
• The water which we use for drinking, cooking, washing, etc all are in a liquid state.

(b) 0ºC

• At 0°C, water exists in solid-state.
• We know that the freezing point of water is 0 °C.
• The liquid form of water starts to become solid (ice) at this temperature.

Example: If you keep an ice cube tray filled with water and freeze it for a few hours, you may observe the cubes where you poured water have become solid. Ice is the solid-state of water.

(c) At 100ºC

• At 100°C, water exists in a gaseous state.
• We know that the boiling point of water is 100°C.
• The water starts to evaporate after attaining this high temperature.

Example: When you boil water in your home, after some time you observe the vapours coming out of the vessel. These vapours are the gaseous state of water.

hope it helps you....☺☺☺