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

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

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Question 14

This question is about titanium and its extraction.

a.

Titanium is a metal. Match each property of titanium to the correct reason for that property.

Properties:

  • Conducts electricity
  • High melting point

Reasons:

  • Titanium has delocalised electrons
  • Titanium has layers of atoms which can slide
  • Titanium has strong metallic bonds
  • Titanium has weak intermolecular forces
  • Titanium has a random arrangement of atoms
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b.

Titanium can be used to make alloys. What is meant by an 'alloy'?

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c.

Rutile is an ore containing titanium dioxide. Rutile contains between 30% and 50% titanium. Pure titanium dioxide always contains 60% titanium. How does this show that rutile is a mixture and not a compound?

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d.

In one stage of titanium extraction, sodium hexafluorotitanate, Na2TiF6\text{Na}_2\text{TiF}_6Na2​TiF6​, is used. Give the total number of atoms in the formula Na2TiF6\text{Na}_2\text{TiF}_6Na2​TiF6​.

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e.

A sample of rutile ore contains 42% titanium. Calculate the maximum mass of titanium that can be extracted from 250,000 kg250,000\text{ kg}250,000 kg of this sample of rutile. Give your answer in standard form.

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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

41 exam-style questions on AQA GCSE Chemistry 1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, covering 1.1.1 Atoms, elements and compounds, 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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