Particle Model of Matter MCQs

Which of the following is not one of the three states of matter?

• solid
• liquid
• semi-permeable plasma
• gas

In which state of matter are the particles able to move around most freely?

• solid
• liquid
• gas
• aqueous

What is caused by the particles in a gas colliding with the walls of a container?

• an increase in mass
• pressure on the walls of the container
• an increase in density
• a change of state

What is the equation used to calculate density?

• density = mass × volume
• density = mass / volume
• density = volume / mass
• density = mass × (volume)^2

What is the unit for density?

• kilograms (kg)
• newtons (N)
• metres cubed (m^3)
• kilograms per metre cubed (kg/m^3)

The volume of an object is decreased while its mass is kept constant. How does this affect the density of the object?

• the density increases
• the density decreases
• there is no change
• it depends on the material of the object

Which of the following statements about changes of state is correct?

• mass is conserved during a change of state
• mass is lost during a change of state
• mass can be either lost or gained depending on the change of state
• mass is gained during a change of state

What type of change is a change of state?

• physical change
• chemical change
• emotional change
• it depends on the change of state

An object has a mass of 800kg and a density of 1600kg/m^3. What is the volume of the object?

• 2 m^3
• 0.5 m^3
• 2 cm^3
• 0.5 cm^3

How much energy is required to increase the temperature of 10 kg of water by 50 °C? The specific heat capacity of water is 4200 J/kg°C. Use the equation change in thermal energy = mass × specific heat capacity × temperature change.

• 2100J
• 2.1kJ
• 2.1MJ
• 21 000J