Quelpr
3 marksParticles in the Atom

CSEC Physics · May/June 2018 · Paper 2 · Question 2(a)(i)

An atom consists of three types of particles: protons, neutrons and electrons.

Complete the following table to show the charge of EACH particle.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)(ii)For the element 226/88 Ra, determine the number of EACH of the three particles referred to in (a)(i).[4 marks]
  2. 2(a)(iii)State ONE similarity and ONE difference between the isotopes of an element.[2 marks]
  3. 2(b)(i)Define the term 'half-life' of a radioactive substance.[2 marks]
  4. 2(b)(ii)The element thorium (Th) has a half-life of 24 days and undergoes beta-decay. Calculate the time it would take for 10 grams of thorium to decay to 1.25 grams.[4 marks]

More practice: the rest of this paper · more Particles in the Atom questions · all CSEC Physics past papers