(a(i))[1]
Using circles about the same size as those in Fig. 4.1 to represent atoms, sketch the arrangement of atoms in a crystalline solid on Fig. 4.2.
(a(ii))[1]
Using circles about the same size as those in Fig. 4.1 to represent atoms, sketch the arrangement of atoms in a gas on Fig. 4.3.
(b(i))[1]
Describe how the atoms move in a solid.
(b(ii))[2]
A sculptor uses a cutting tool to make a statue from a block of crystalline rock. Explain why he must exert a large force on the tool to chip off a small piece of rock.
(c)[2]
State and explain, in terms of atoms, what happens to the helium from the balloon after the balloon bursts.