Question

6. Give two reasons to justify-
(a) water at room temperature is a liquid.
(b) an iron almirah is a solid at room temperature.​

Answer 1

Answer:

a) Transition in the states of matter of water occurs at 0°C and 100°C. At room temperature, water  is in the liquid state, thereby exhibiting all the properties of a liquid such as  water flows at this temperature .It has a fixed volume and it takes the shape of its container

(b) The melting and boiling points of iron are as high as 1538°C and 2862°C respectively. The room  temperature is about 20-25 °C. Hence iron almirah is a solid at room temperature.It exibits  properties of solids at this temperature such as having fixed shape and volume.

Answer 2

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(a) water at room temperature is liquid because at this temperature.

(i)it has fixed volume

(ii)it can flow.

(B) An iron almirah is solid at room temperature because at this temperature

(i) it has definite shape along with fixed volume

(ii) It can not flow like water and hence does not possess fluidity.

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