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Acids Bases and pH

Acids Bases and pH. Year 8 Science Mr Kos. Acids and Bases. Acids and Bases are found everywhere Common acids include: Hydrochloric Acid Found in Gastric Juice Used to clean bricks Citric Acid Lemon Juice Acetic Acid Vinegar Carbonic Acid Soft Drink.

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Acids Bases and pH

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  1. Acids Bases and pH Year 8 Science Mr Kos

  2. Acids and Bases • Acids and Bases are found everywhere • Common acids include: • Hydrochloric Acid • Found in Gastric Juice • Used to clean bricks • Citric Acid • Lemon Juice • Acetic Acid • Vinegar • Carbonic Acid • Soft Drink

  3. Acids and Bases are found everywhere Common bases include: Soaps and Detergents Lime Antacids

  4. Acids and Bases • Features of Acids • Taste sour (from latinAcidus/acere meaning sour) • Corrosive • React with bases to form salt and water • React with metals to form hydrogen gas • Features of Bases • Taste Bitter • Feel Slippery • Corrosive • Alkalis are bases that dissolve in water • React with acids to form salt and water

  5. Acids and Bases • Definitions of acids • Boyle described them that they neutralise bases and that they are sour • Arrhenius, • Increase H3O+ concentration • Bronsted-Lowry • Donates H+ ion

  6. Acids and Bases • Definitions of bases • Arrhenius, • Increase HO- concentration • Bronsted-Lowry • Accepts H+ ion

  7. In our fizzy bubbly prac: Vinegar + Baking Soda > Carbonic Acid Carbonic Acid > Water + Carbon Dioxide Vinegar: CH3COOH -> CH3COO- + H+Baking Soda: NaHCO3 -> Na+ + HCO3- H++ HCO3- -> H2CO3 Carbonic Acid H2CO3 -> H2O + CO2

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