Kinetic Particle Theory

Which of the following compounds has particles which are arranged regularly?

• Water

• Steam

• Dry ice

• Water vapour

Which of the following has the weakest forces of attraction between particles, at room temperature?

• Gold

• Helium

• Ice

• Mercury

Which is true for liquids?

• The particles are far apart.

• The particles vibrate about fixed positions.

• The particles have an orderly arrangement.

• The particles slide past one another.

In which physical process(es) do particles gain heat energy?

1. changing state from gas to liquid

2. changing state from liquid to gas

3. changing state from solid to liquid

4. changing state from gas to solid

• 1 only

• 2 only

• 2 and 3 only

• 1, 2 and 4 only

Methane has a boiling point of -161.5 degrees Celsius and a melting point of -182 degrees Celsius. At which temperature will methane be in liquid state?

• -45 degrees Celsius

• -160 degrees Celsius

• -170 degrees Celsius

• -190 degrees Celsius

Which of these substances undergo sublimation?

• Sodium chloride

• Magnesium chloride

• Ammonium chloride

• Potassium chloride

In the process of condensation, heat is

• given out and taken in

• not given out but only taken in

• given out and not taken in

• not given out nor taken in

Carbon dioxide exists in the following states.

• solid, liquid and gas

• solid and liquid only

• liquid and gas only

• solid and gas only

Liquids have

• fixed shape and fixed volume

• shape that is not fixed but fixed volume

• fixed shape but not fixed volume

• neither fixed shape nor volume

The following are compressible.

• solid, liquid and gas

• solid only

• liquid only

• gas only