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

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Question 30

The table shows the relative numbers of atoms in a compound.

Element symbolRelative number of atoms
K\text{K}K2
O\text{O}O1

A computer model of part of the compound contains 36 potassium atoms.

a.

Give the chemical formula of the compound.

[1]
b.

What is the name of the compound?

[1]
c.

Calculate the total number of atoms represented in the model.

[2]
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

93 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.

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