(a)[5]
Describe P, Q and R in terms of their bonding, how their particles are arranged, and how their particles move.
(b)[2]
Describe the change in the volume of substance R inside the syringe. Explain your answer using particles.
(c)[3]
Which two of the following are physical changes? Explain your answer. A Substance P reacts with concentrated sulfuric acid. B Iodine is formed when chlorine is added to an aqueous solution of substance P. C Substance P boils at $1330^\circ\text{C}$. D Substance P dissolves easily in water.
(d)[2]
State one further use of graphite and explain how that use is linked to its structure.