The Particle Model (Part 2)

Diffusion is...

• the movement of particles from an area of low concentration to an area of high concentration till it reaches a state of equilibrium

• the movement of water particles from an area of high concentration to an area of low concentration till it reaches a state of equilibrium

• the movement of particles from an area of high concentration to an area of low concentration till it reaches a state of equilibrium

• the movement of particles from an area of high concentration to an area of low concentration till all particles disappear

Diffusion takes place fastest in...

• solids

• liquids

• gases

Diffusion will take place fastest at which temperature?

• 0°C

• 24.5°C

• 60.9°C

• 90.2°C

Name the states of matter related to a can of coca cola.

• Solid - Can

  Liquid - Cola

• Solid - Can

  Liquid - Fizzy carbon dioxide

• Solid - Can

  Liquid - Cola

  Gas - Fizzy carbon dioxide

• Liquid - Cola

  Gas - Fizzy carbon dioxide

There are 400 air particles in a tyre. Tobby pumps more air into the tyre. What will happen to the air pressure in the tyre?

• The pressure will decrease because the number of air particles have increased.

• The pressure will increase because the number of air particles have decreased.

• The pressure will decrease because the number of air particles have decreased.

• The pressure will increase because the number of air particles have increased.

What is mass?

• The amount of matter in an object.

• The amount of space an object/a substance takes up.

• The amount of matter in unit volume of a substance.

What is volume?

• The amount of matter in an object.

• The amount of space an object or a substance takes up.

• The amount of matter in unit volume of an object or substance.

What is density?

• The amount of matter in an object.

• The amount of space an object or a substance takes up.

• The amount of matter in unit volume of an object.

What are the units of mass?

• g or kg

• ml, L, cm³ or m³

• g/cm³ or kg/m³

What are the units of density?

• g or kg

• ml, L, cm³ or m³

• g/cm³ or kg/m³

• N