(a)[3]
Explain these observations using the kinetic particle model.
(b(i))[2]
Complete the table to estimate: - the density of liquid fluorine - the melting point of chlorine.
(b(ii))[1]
Is fluorine lighter or darker in colour than chlorine? Explain your choice.
(b(iii))[2]
What state is bromine in at 40 ^{\circ}C? Give a reason for your answer.
(c)[2]
Complete the chemical equation for the reaction between aqueous bromine and aqueous potassium iodide. [BLANK] + 2KI → I₂ + [BLANK]KBr