Chemical Decomposition of Calcium Carbonate and Lime: Sources, Properties, and Reactions, Schemes and Mind Maps of Chemistry

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Decomposition Reactions

L.O: To use scientific terms and simple models to show chemical processes.

Carbonates

Shells (^) Limestone

Decomposition of copper carbonate

https://www.youtube.com/watch?v=E5Zy4SjdPJ

Law of conservation of mass

The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed.

Check Your answers

1. A.shellfish, Oysters, snail shell, egg shell B. Chalk, marble, limestone,
2. Lime is calcium oxide. It is made by heating calcium carbonate.
3. Calcium carbonate is a remedy for indigestion. Lime is added to salt and water to reduce acidity.

Safety precautions: Clamp tightly but do not break glass. Do not touch hot glass. The delivery tube should be secure. Do not overheat one place on the test tube. Point away from the faces. Use goggles to protect eyes. Take care not to break Delivery tube. Green powder of copper carbonate turns black. Colour less limewater turns cloudy

1. Calcium oxide +water → calcium hydroxide