Substances can be classified as elements, compounds, or mixtures.
Each of the diagrams (i) to (iv) represents either an element, a compound, or a mixture.
State which of these is represented by each diagram in Part (a):
Substances can also be classified as solids, liquids, or gases.
Each of the diagrams (i) and (ii) in Part (b) represents either a solid, a liquid, or a gas.
State which state of matter is represented by each diagram:
