Year 7 Revision

Figure shows that the

• liquid occupies space

• liquid has mass

• volume of liquids are constant

• liquid takes after the shape of the container

Particles closest together

• solid
• liquid
• gas
• solid, liquid and gas

Particles move quickest

• solid
• liquid
• gas
• solid, liquid and gas

When air is compressed,

I the amount of particles increase

II its volume is reduced

III the collision of air particles increase.

• II only

• I and II only

• II and III only

• I, II and III

Figure shows the arrangement of particles in matter P, Q and R. Which of the following matter can be compressed easily?

I P

II Q

III R

• I only

• III only

• II and III only

• I, II and III

Definite shape and definite volume

• solid
• liquid
• gas
• solid, liquid and gas

Particles of a liquid

• are tightly packed together and stay in a fixed position.
• have no viscosity.
• decrease in volume with increasing temperature.
• are free to move around one another but still touch.

Figure shows two states of particles arrangment of water. Compare to state P, particles in state Q

I move faster

II have stronger force of attraction

III larger spaces between the particles

• I and II only

• I and III only

• II and III only

• I, II and III

The process represent by the picture is ______________

• sublimation

• evaporation

• condensation

• deposition

An ice cube is placed in a pan. The pan is placed over an open flame. Which change will MOST likely happen over time? (TP4)

• The ice changes to a gas then a liquid

• The ice changes to a gas and then back to a solid

• The ice changes to a liquid then to a gas.

• The ice changes to a liquid and back to a solid.