Chemistry ( Rocks and buliding materials)

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What is the main formula for the main compound in limestone?
CaCO3
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How is cement made?
Limestone is mixed with clay and heated strongley in a kiln
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Name the four substances used to make concrete
Water,cemente,agregate and sand
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What is meant by "thermal decomposition" of a compound?
Breaking down by heating
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Name the products formed when calcium carbonate is heated strongly
Calcium oxide and carbon dioxide
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wha is the word equation for the reaction of calcium oxide with water?
calcium oxide + water > calciun hydroxide
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Limewater goes cloudy when mixed with carbon dioxide, explain why
Calcium carbonate is formed and is insoulbe
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Why do acids damage limestone?
acids react with calcium carbonate, producing carbon dioxide and a salt. The salt dissolves in the water so the amount of limestone deacreases
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Other cards in this set

Card 2

Front

How is cement made?

Back

Limestone is mixed with clay and heated strongley in a kiln

Card 3

Front

Name the four substances used to make concrete

Back

Preview of the front of card 3

Card 4

Front

What is meant by "thermal decomposition" of a compound?

Back

Preview of the front of card 4

Card 5

Front

Name the products formed when calcium carbonate is heated strongly

Back

Preview of the front of card 5
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