Kinetic theory models the arrangement and movement of particles in solids, liquids and gases. It explains properties of substances in these different states, and what happens during changes of state.
In which state of matter are the particles furthest apart?
Which state of matter has a fixed volume but no fixed shape?
Which of these describe the particles in a solid?
Vibrating about a fixed point
Moving around each other
Moving around in all directions
Which change represents evaporating?
Gas to liquid
Liquid to gas
Liquid to solid
Which of these changes occur at the same temperature for the same substance?
Melting and condensing
Melting and boiling
Freezing and melting
Which of these changes could be brought about by heating a substance?
Which of the following changes involves the transfer of energy to particles from the surroundings?
In which states are the particles randomly arranged?
Solid and liquid
Solid and gas
Liquid and gas
In which of these changes are new substances produced?
Physical changes only
Chemical changes only
Physical changes and chemical changes
Which of the following is an example of a chemical change?
Iron mixing with sulfur
Tap water becoming steam
Iron and sulfur forming iron sulfide