In which state of matter are the particles closest together?
Solid
Liquid
Gas
Which state of matter is best described by the following statement: ‘The particles vibrate about a fixed position but do not move through the matter’?
Which state of matter is best described by the following statement: ‘The particles move quickly and randomly in all directions’?
How do the particles in a liquid move?
Randomly in all directions
They roll over each other
They vibrate around a fixed point
What process occurs when a liquid absorbs energy gradually from its environment to change into a gas?
Evaporation
Boiling
Condensation
What is the difference between the densities of solids, liquids and gases due to?
The distance between the particles in each state of matter
The temperature of the surroundings
The mass of the solid, liquid or gas
The density of solid silver is 10.5 g/cm3. What would you expect the density of liquid silver to be?
More than 10.5 g/cm3
Equal to 10.5 g/cm3
Less than 10.5 g/cm3
The density of oxygen gas is 0.0014 g/cm3. What would you expect the density of liquid oxygen to be?
More than 0.0014 g/cm3
Equal to 0.0014 g/cm3
Less than 0.0014 g/cm3
What mass of oxygen gas occupies a volume of 5 000 cm3? (Density of oxygen gas = 0.0014 g/cm3)
7 g
70 g
700 g
Calculate the mass of air in a room which has dimensions 5 m by 6m by 2.5 m (The density of air = 1.225 kg/m3)
16.5 kg
61.2 kg
91.9 kg