Skip to content

Course home

Sign up

1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

EasyMediumHard
12345678910111213141516171819202122232425
Question 14
F83%

The relative atomic mass of chlorine is 35.5. Why is this value not a whole number?

[1]
A

Each chlorine atom contains one more neutron than it contains protons

B

The chlorine atoms in a sample have different numbers of protons in them

C

It is an average value that takes account of the abundance of the isotopes

D

It is an average of the mass of a chlorine atom and a chlorine molecule

Markscheme

1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

40 exam-style questions on AQA GCSE Chemistry 1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, covering 1.1.1a Atoms, elements and compounds, 1.1.1b Half equations and ionic equations, 1.1.2 Mixtures, 1.1.3 The development of the model of the atom (common content with physics), 1.1.4 Relative electrical charges of subatomic particles, 1.1.5 Size and mass of atoms, 1.1.6 Relative atomic mass, and 1.1.7 Electronic structure. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank