Particle model 2

Liquid assumes the shape of a container as the particles of liquid are always moving.

• True

• False

As ice melts, the particles lose energy and begin to move more rapidly.

• True

• False

The continuous motion of particles is termed the kinetic theory of matter.

• True

• False

The faster a particle moves, the more kinetic energy it has.

• True

• False

Which state of matter are demonstrated with the moving particles?

a

b

c

solid

liquid

gas

Tick all statements that are true

• Diffusion of the food dye would be faster if the liquid were heated. 

• Diffusion is complete when the container of liquid has completely changed colour. 

• The particles of the food dye collide with other particles as they move through the water.

• Diffusion of the food dye particles occurs rapidly as the particles can move fast and far. 

Density is how close the particles are to each other.

• True

• False

Which statement is true?

• The density of helium is lighter than air and it can lift up the weight of a balloon. 

• The density of helium is much heavier than air and it can lift up the weight of a balloon.  

• • The movement of the helium particles (atoms) move so rapidly that they exert pressure from inside the balloon, lifting it into the sky.

• The surrounding air exerts a large amount of pressure on the balloon, which forces the balloon upwards.

Organise the items to their viscosity

Groups:

(a) Low viscosity

,

(b) High viscosity

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