CLASS 4 EVS " PHYSICALSTATES OF MATTER" notebook work

PHYSICAL STATES OF MATTER

KEY-WORDS

particles	volume	pattern
molecules	container	properties
matter	poured	poured
atom	gaseous	jiggle
rigid	liquid	evaporation

Define the terms

1.Matter: Anything that has weight and occupies space is a matter.

2.Atom: Every matter around us is made up of small particles known as atoms.

3. Molecules: Atoms combine to form molecules.

4. Solid: The state of matter in which a substance has a fixed shape and volume.

5. Liquid: The state of matter which has no fixed shape and the substance flow freely.

6. Gas: The state of matter in which the substance has no fixed shape and volume. Molecules move in all directions.

Question And answers

Q-1 Give three examples of fuel products of each solid, liquid and gaseous state.

Ans: Solid: wood, coal, charcoal

Liquid: petrol, diesel, kerosene

Gas: CNG, bio gas, LPG

Q-2 Make a table explaining properties and molecular arrangement of all the three states of matter (solid, liquid and gas)

Ans: as in image

GIVE REASONS

1. Wet tissue dries up after sometimes.

Ans. The water gets evaporated because of heat of the sun and dries the tissue.

2. The aroma of food fills up the entire room.

Ans. The aroma of food fills up the entire room as it is in gaseous state and the molecules of gas move freely in all directions.