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      Lesson details

      Learning outcome

      I can describe the properties of the noble gases, their uses, and explain why they are unreactive.

      Key learning points

      1. Noble gases are in Group 0 of the periodic table and are unreactive.
      2. Noble gases are all gases at room temperature.
      3. They have complete outer electron shells, making them stable.
      4. Moving down Group 0 elements, atomic mass, density and boiling points increase.

      Keywords

      • Inert - An inert substance is one which is not chemically reactive.

      • Noble gas - A noble gas is an element in Group 0 of the periodic table.

      Common misconception

      Confusing the spelling of "noble" with "Nobel" and misunderstanding why noble gases are named so.

      Clarify that "noble" refers to their stability and lack of reactivity due to a full outer electron shell, meaning they don't need to bond with other elements.

      Teacher tip

      Emphasise the various uses of these elements due to their inertness, such as in light bulbs.

      Equipment

      Access to computers to research, or printouts of the additional material (comprehension exercise).

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      What does a period in the periodic table represent?

      Elements with the same number of outer shell electrons.
      Elements with the same atomic number.
      Correct answer: Elements with the same number of electron shells.
      Elements with similar chemical properties.

      Q2.
      What do elements in the same group of the periodic table have in common?

      similar atomic number
      same number of electron shells
      same atomic mass
      Correct answer: similar chemical properties

      Q3.
      Which of the following is an example of a chemical change?

      melting ice
      tearing paper
      dissolving sugar in water
      Correct answer: burning wood
      boiling water

      Q4.
      In a chemical reaction, the substances that are present at the start are called ...

      Correct Answer: reactants, reactant

      Q5.
      Which of the following is a property of gases?

      fixed shape and fixed volume
      fixed shape and variable volume
      variable shape and fixed volume
      Correct answer: variable shape and variable volume

      Q6.
      Elements in the same group of the periodic table have the same number of in their outer shell.

      Correct Answer: electrons

      6 Questions

      Q1.
      Noble gases are found in Group of the periodic table.

      Correct Answer: 0, zero

      Q2.
      Which of the following elements is a noble gas?

      hydrogen
      oxygen
      Correct answer: helium
      nitrogen
      chlorine

      Q3.
      Why are noble gases unreactive?

      They are non-metals.
      Correct answer: They have complete outer electron shells.
      They have low atomic masses.
      They are gases at room temperature.

      Q4.
      The noble gas used in balloons because it is less dense than air is ...

      Correct Answer: helium

      Q5.
      Arrange the following noble gases in order of increasing boiling points, starting with the lowest boiling point.

      1 - helium
      2 - neon
      3 - krypton
      4 - xenon

      Q6.
      Match the noble gas with its property or use:

      Correct Answer:helium,lightest noble gas
      Correct Answer:neon,used in high-intensity lamps
      Correct Answer:argon,most abundant noble gas in the atmosphere
      Correct Answer:krypton,heaviest noble gas

      To help you plan your 9 science lesson on: Group 0 (Noble Gases), download all teaching resources for free and adapt to suit your pupils' needs...