(a)[5]
Describe X, Y and Z by referring to their bonding, how their particles are arranged and how those particles move.
(b)[2]
Describe what happens to the volume of substance Z in the syringe when the temperature is increased, with pressure staying constant. Explain your answer using particles.
(c)[2]
Describe the colour change seen when substance Y is added to anhydrous copper(II) sulfate.
(d)[1]
Give a reason why substance Y is a compound.