(a)[3]
Use the kinetic particle model of matter to account for this observation.
(b(i))[1]
State the principal use of the radioactive isotope $^{235}\text{U}$.
(b(ii))[1]
Give one medical application of radioactive isotopes.
(b(iii))[2]
Define what is meant by relative atomic mass.
(c(i))[2]
Complete the chemical equation for this reaction below.\n\n$\ldots\ldots + 2\text{KBr} \rightarrow \text{Br}_2 + \ldots\ldots\text{KCl}$
(c(ii))[1]
Give one practical use of chlorine.
(c(iii))[1]
Is this oxide acidic or basic? Explain your answer.
(c(iv))[1]
The anhydrous copper(II) chloride decomposed and chlorine was produced. Describe the colour change of the litmus paper.