(a) Water is matter because it has …………… and occupies ……………

(b) Any matter which has a definite …………… but no definite shape is called a …………….

(c) …………… and …………… can flow.

(d) The molecules are at a greater distance in …………… as compared to liquids.

(e) Water boils at …………… °C.

(f) The physical state of a substance, which has neither fixed volume nor fixed shape is a ……………

Write whether the following statements are true or false.

(a) Only water can exist in three different states. ……………

(b) If the container in which a gas is collected has an opening, the gas will flow out and spread itself indefinitely. ……………

(c) Solids have the largest inter-molecular space. ……………

(d) There is no difference between evaporation and boiling. ……………

(e) All solids, on heating, first change to liquid and then to the gaseous state. ……………

(f) The intermolecular force of attraction is the weakest in gases. ……………

(g) A gas has no free surface. ……………

Select the odd one out from the following:

(a) solid, liquid, gas, volume

(b) water, fruit juice, air, stone, milk

(c) Iron, aluminium, wood, gold

(d) Freezing, condensation, melting point, evaporation

For each of the following statements, say whether it describes a solid, a liquid or a gas.

(a) Particles move about very quickly but do not leave the surface.

(b) Particles are quite close together.

(c) Particles are far apart and move in all directions.