2p9 metals and acids 121110


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Metals and acids: S2
Salts and reactivity series

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  • Literacy in science!
  • 2p9 metals and acids 121110

    1. 1. Reactions of Metals and Acids 2P9: Friday 12th November
    2. 2. Homework review • Uses of metals in the home…
    3. 3. Review previous learning: hands up please! • Metals react with an acid to produce a chemical called a salt. Hydrogen gas is also produced in this reaction. • The general equation for a metal reacting with an acid is: Metal + Acid  Salt + Hydrogen
    4. 4. Naming Salts Salts have a first name and a last name: First Name – comes from the metal Last Name – comes from the acid Acid name Salt produced Hydrochloric acid chloride Sulphuric acid sulphate Nitric acid nitrate
    5. 5. Examples of Salts From our experiments, the reactions which worked were: • Magnesium + Hydrochloric acid  • Zinc + Hydrochloric acid  • Magnesium + Sulphuric acid  • Zinc + Sulphuric acid  Magnesium Chloride + Hydrogen Zinc Sulphate + Hydrogen Magnesium Sulphate + Hydrogen Zinc Chloride + Hydrogen
    6. 6. Updating our reactivity series Copper metal did not react with either Hydrochloric acid or Sulphuric acid. Copper is therefore not as reactive as Magnesium or Zinc. We can add these metals to our reactivity series: Potassium Most reactive Sodium Calcium Magnesium Zinc Copper Least reactive
    7. 7. And now for more fun… • On your table is a reactivity series jigsaw… • In your groups come up with a mnemonic to remember the reactivity series: – Remember ROYGBIV (Richard of York gave battle in vain) to remember the colours of the rainbow – Potassium, Sodium, Calcium, Magnesium, Zinc, Copper
    8. 8. Remembering the reactivity series… • Please Potassium (K) • Send Sodium (Na) • Lions, Lithium (Li) • Cats, Calcium (Ca) • Monkeys, Magnesium (Mg) • And Aluminium (Al) • Zebras Zinc (Zn) • Into Iron (Fe) • Lovely Lead (Pb) • Hot Hydrogen (H) (non-metal) • Countries, Copper (Cu) • Signed Silver (Ag), • General Gold (Au) • Penguin. Platinum (Pt) Most reactive Least reactive
    9. 9. Next steps… • Next Wednesday you will be doing the Metal Displacement Experiment • Some metals are more reactive than others • A more reactive metal can displace a less reactive metal from a salt solution • When a displacement reaction occurs we see an chemical reaction taking place – Name three things we might see happening…
    10. 10. Metal Displacement experiment Sodium Sulphate Zinc Sulphate Copper Sulphate Silver nitrate Magnesium Zinc Copper
    11. 11. Review our learning: • How do we produce a salt? • Where does the first name of a salt come from? • Where does the last name of a salt come from? • Which salt will Hydrochloric acid produce? • Which acid would give a Sulphate salt?