Properties of the different states of matter
3 marks · EasyThe diagram below shows particles in the three states of matter.
Label each box with 'solid', 'liquid', or 'gas' based on the arrangement of the particles.
Explain why the particles in Box 3 move around more freely than those in Box 1.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) Box 1: solid Box 2: liquid Box 3: gas · must show Box 1 = solid, Box 2 = liquid, Box 3 = gas
(b) — · must show Gas particles are far apart, Forces between gas particles are much weaker, Particles in solids are held by strong forces and fixed in place
Must show: Box 1 = solid, Box 2 = liquid, Box 3 = gas
Common mistakes: Mixing up box labels
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Labels all three boxes correctly: Box 1 is solid, Box 2 is liquid, Box 3 is gas.
M1 (b) · 1 mark · States that gas particles in Box 3 are far apart with weak forces.
M2 (b) · 1 mark · States that particles in Box 1 (solid) are held close by strong forces in fixed positions.
Worked solution
a) Box 1: solid; Box 2: liquid; Box 3: gas.
b) Gas particles in Box 3 are far apart and have weak forces between them, so they can move freely. In Box 1, particles are held tightly by strong forces and can only vibrate.