Physics 0625 · IGCSE · The nuclear model of the atom
The nuclear model of the atom — practice question
Hydrogen has three naturally occurring isotopes: hydrogen-1, hydrogen-2 and hydrogen-3. The nuclide notation for hydrogen-1 is $^{1}_{1}\text{H}.$
(a)[1]
Write down the nuclide symbols for hydrogen-2 and hydrogen-3.
(b(i))[2]
State the meaning of nuclear fusion.
(b(ii))[3]
Write down, in nuclide notation, the equation for this reaction.
(c)[2]
Nuclear fusion in the Sun provides most, but not all, of the resources used to generate electrical energy on Earth. State two resources whose source is not nuclear fusion in the Sun.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “^{2}₁H, then ^{3}₁H” …