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pH scale

Explore the pH scale, how indicators determine acidity, alkalinity, or neutrality, and how neutralisation reactions occur in chemistry. Learn about the reaction of metals with acids and metal oxides. Test your knowledge with a quiz!

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pH scale

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  1. pH scale pH scale • Indicators can be used to find out whether a solution is acid, alkaline or neutral • Universal Indicator can be used to find the pH of a solution • Acid – red, pH less than 7 • Neutral – green, pH = 7 • Alkali – blue, pH greater than 7

  2. pH scale pH scale

  3. pH scale pH scale

  4. pH scale pH scale

  5. Neutralisation Neutralisation • Acids react with alkaline solutions to form a salt and water • Hydrochloric acid produces chlorides • Nitric acid produces nitrates • Sulphuric acid produces sulphates • Ammonia can dissolve in water to produce an alkaline solution. This can be neutralised with acids to produce ammonium salts • Indicators can monitor neutralisation reactions

  6. Neutralisation – Hydrochloric acid Neutralisation

  7. Neutralisation – Sulphuric acid Neutralisation

  8. Neutralisation – Nitric acid Neutralisation

  9. Neutralisation – Fertiliser Neutralisation

  10. Reaction of Metals and Acid Reaction of Metals and Acid

  11. Metal Oxides & Hydroxides Metal Oxides & Hydroxides • Transition metal oxides and hydroxides do not dissolve in water. They are called bases • They react with acids to produce salts that are soluble • The excess metal oxide can be filtered off

  12. Wordsearch Wordsearch

  13. Quiz Quiz

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