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Acids and Carbonates

Acids and Carbonates. Learning objectives: How carbonates react with acids Testing for carbon dioxide Does your toilet have scummy grey marks under the toilet? Is your kettle furred up?. Limescale. It is a problem It doesn’t look nice. Its rough so it sticks to things easily.

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Acids and Carbonates

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  1. Acids and Carbonates Learning objectives: • How carbonates react with acids • Testing for carbon dioxide Does your toilet have scummy grey marks under the toilet? Is your kettle furred up?

  2. Limescale • It is a problem • It doesn’t look nice. • Its rough so it sticks to things easily. • So therefore bacteria love it! • Limescale is calcium carbonate. • It comes from water that has flowed over limestone or chalk rocks. • Its called calcium carbonate because it is made up of: • Calcium • Carbon • oxygen

  3. Removing Limescale • You can remove limescale by adding acid to it. • For example, if you have limescale in your kettle you can add acid. • You will see bubbles fizzing. • The bubbles contain carbon dioxide gas. • The acid and the calcium carbonate make a new substance.

  4. Explain how you can test for Carbon dioxide gas?

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