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IGCSE Chemistry > C13. Carbonates > Flashcards

C13. Carbonates Flashcards

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1
Q

What is limestone?

A

Calcium carbonate
Sedimentary rock
CaCO(3)

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2
Q

What is thermal decomposition?

A

When the molecule breaks apart on heating

CaCO(3) -> CaO + CO(2)

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3
Q

Name the characteristics of all carbonates.

A
  • Have the carbonate ion CO(3)2-
  • All decompose on heating to produce the oxide and carbon dioxide
    (Except potassium carbonate and sodium carbonate)
  • Reacts with acids to produce a salt, carbon dioxide and water
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4
Q

What are the uses of limestone?

A
  • Neutralises acids in soil, factory waste and acid gases from power stations
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5
Q

What is ‘lime’?

A

Calcium oxide

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6
Q

How do we manufacture lime from limestone?

A

We heat limestone strongly and it breaks down into calcium oxide, which is lime (thermal decomposition)

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IGCSE Chemistry (8 decks)

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