Question

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

(a) At room temperature (25 °C), water is a liquid because it has the following characteristic of liquid:

(i). At room temperature, water has no shape but has a fixed volume that is, it occupies the shape of the container in which it is kept.

(ii). At room temperature, water flows.

(b) An iron almirah is a solid at room temperature (25 °C) because:

(i). it has a definite shape and volume like a solid at room temperature.

(ii). it is rigid as solid at room temperature.

Answer 2

(a) Water at room temperature is a liquid because it has fluidity and has definite volume but no definite shape. 

(b) An iron almirah is a solid at room temperature because it is rigid and has a definite shape.