Chemistry 0620 · IGCSE · Solids, liquids and gases
Solids, liquids and gases — practice question
The diagram illustrates the physical changes that element X can undergo. It contains solid X, liquid X and gaseous X, with arrows numbered 1 to 4. The arrow going from liquid X to gaseous X is labelled "boiling or evaporation".
(a(i))[4]
Give the scientific names for these numbered physical changes.
1
2
3
4
(a(ii))[1]
Explain why the changes shown count as physical changes.
(a(iii))[1]
State one more difference between boiling and evaporation.
(b)[3]
Describe the separation, arrangement and motion of particles of element X when it is solid.
separation
arrangement
motion
(c)[2]
Write a chemical equation to show this reaction.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The correct term is melting.” …