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Elements, Mixtures And Compounds
 

Elements, Mixtures And Compounds

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    Elements, Mixtures And Compounds Elements, Mixtures And Compounds Presentation Transcript

    • Elements, mixtures and compounds By the end of the lesson you should be able to:
      • Recognise and classify elements, mixtures and compounds
      • Recall some chemical symbols
      • Write word/symbol equations
      • Give some uses of rock salt
      • Describe how rock salt is purified
    • Starter
      • Work in pairs
      • Sort the cards so into 6 rows. Each row should have in it:
        • A picture (at the start)
        • A card that says what that picture shows
        • A card that explains your choice (at the end)
        • e.g.
      THIS PICTURE IS AN ELEMENT BECAUSE ALL THE ATOMS ARE THE SAME
    • 8E Making marvellous molecules!
    • Word and Symbol Equations
      • An equation is short way of describing a chemical reaction
      • E.G. When carbon reacts with oxygen, carbon dioxide is made
      • Carbon + Oxygen  Carbon dioxide
      • C + O 2  CO 2
      Reactants Products
    • Separating Rock Salt Crush Rock Salt Add Water Filter mixture Evaporate Water Salt is left behind
    • Uses of Salt Pure Salt Rock Salt De-icing Roads Electrolysis Food use, dyeing, dishwasher salt, preservatives, bath salts Solvay Process Sodium Carbonate Making glass, soaps, paper, dyes Hydrogen – fuel, making margarine Sodium Hydroxide - making paper, soaps, fibres, detergents Chlorine – killing germs in water, bleaches