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      Developing a reactivity series for metals

      Lesson details

      Learning outcome

      I can compare the reactions of different metals with water and dilute acids in order to work out the reactivity series for metals.

      Key learning points

      1. A more reactive element will replace a less reactive element in a compound (displacement).
      2. The more easily a metal atom forms a positive ion, the more reactive it is.
      3. Some metals react with acid to produce a metal salt and hydrogen gas.
      4. Some metals react with water to produce a metal hydroxide and hydrogen gas.
      5. Carbon is a non-metal element often included in the reactivity series between aluminium and zinc.

      Keywords

      • Ion - An ion is an atom or group of atoms with a positive or negative charge due to the loss or gain of electrons.

      • Salt - A salt is an ionic compound formed from positive and negative ions electrostatically attracted to each other.

      • Reactivity series - The reactivity series shows metals placed in order of reactivity with the most reactive metal at the top.

      • Displacement - Displacement is where a more reactive element takes the place of a less reactive element in a compound.

      Common misconception

      Thinking that a metal and acid react together to produce salt and water.

      Use symbol equations to show how hydrogen is produced, rather than water, due to the absence of oxygen atoms.

      Teacher tip

      Practical ideas include: demo of alkali metals and water, class practical reacting different metals with acid, and microscale displacement reactions.

      Licence

      This content is © Oak National Academy Limited (2025), 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.
      Why is the metal gold used to make jewellery?

      it conducts electricity
      it has a low melting point
      Correct answer: it is unreactive
      it is expensive
      it is sonorous

      Q2.
      Metals lose electrons to form ions.

      Correct Answer: positive

      Q3.
      When a metal reacts with an acid, one of the products is a salt. What is the other product?

      oxygen
      methane
      Correct answer: hydrogen
      carbon dioxide

      Q4.
      When magnesium reacts with nitric acid what is the name of the salt produced?

      magnesium chloride
      magnesium sulfate
      Correct answer: magnesium nitrate
      magnesium oxide

      Q5.
      Potassium, sodium and lithium are highly reactive metals. Which of the following statements about these metals are correct?

      Correct answer: they are located in Group 1 of the periodic table of elements
      they are located in Group 2 of the periodic table of elements
      Correct answer: Group 1 metals get more reactive as you go down the group
      Group 1 metals get less reactive as you go down the group

      Q6.
      Match the following keywords to the correct definition.

      Correct Answer:atom,building block of all matter

      building block of all matter

      Correct Answer:ion,an atom, or group of atoms, with a positive or negative charge

      an atom, or group of atoms, with a positive or negative charge

      Correct Answer:inert,not chemically reactive

      not chemically reactive

      Correct Answer:displacement,a more reactive element takes the place of a less reactive element

      a more reactive element takes the place of a less reactive element

      Correct Answer:salt,ionic compound formed from positive and negative ions

      ionic compound formed from positive and negative ions

      6 Questions

      Q1.
      What is the name of the reaction where a more reactive element will take the place of a less reactive element in a compound?

      Correct Answer: displacement

      Q2.
      Which of the following statements about the reaction shown are correct? calcium + iron sulfate → calcium sulfate + iron

      it is an example of a combustion reaction
      iron is more reactive than calcium
      Correct answer: calcium is more reactive than iron
      Correct answer: calcium displaces iron in the compound
      iron displaces calcium in the compound

      Q3.
      Why is potassium more reactive than iron?

      potassium more easily loses electrons to form negative ions
      potassium more easily gains electrons to form negative ions
      Correct answer: potassium more easily loses electrons to form positive ions
      potassium more easily gains electrons to form positive ions

      Q4.
      The non–metal carbon is positioned between which two metals in the reactivity series?

      Correct answer: aluminium
      sodium
      hydrogen
      Correct answer: zinc
      silver

      Q5.
      Which of the following substances are products of the reaction between zinc and hydrochloric acid?

      oxygen
      water
      Correct answer: hydrogen
      zinc hydroxide
      Correct answer: zinc chloride

      Q6.
      Which of the following substances are products of the reaction between lithium and water?

      lithium oxide
      Correct answer: lithium hydroxide
      lithum carbonate
      oxygen
      Correct answer: hydrogen

      To help you plan your 11 chemistry lesson on: Developing a reactivity series for metals, download all teaching resources for free and adapt to suit your pupils' needs...