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GCSE chemistry > limestone > Flashcards

limestone Flashcards

1
Q

what is the formula for calcium carbonate?

A

CaCO3

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2
Q

give some uses of limestone

A

building materials
cement
road making

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3
Q

what metal is extracted using limestone?

A

iron

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4
Q

give some advantages of quarrying

A

provides jobs

provides building materials

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5
Q

give some disadvantages of quarrying

A

dust pollution
noise pollution
spoils the landscape

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6
Q

what is the word equation for calcium carbonate decomposing into calcium oxide?

A

calcium heat calcium carbon

carbonate —–> oxide + dioxide

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7
Q

give some observations for the reaction of calcium carbonate decomposing into calcium oxide

A

fizzing
steam given off
crumbling

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8
Q

what is the correct science term for the breakdown of calcium carbonate into calcium oxide?

A

thermal decomposition

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9
Q

give the symbol equation representing the thermal decomposition of calcium carbonate

A

CaCO3 –> CaO + Co2

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10
Q

what is the colour of calcium oxide?

A

white

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11
Q

what is the chemical name for quicklime?

A

calcium oxide

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12
Q

which liquid is added to calcium oxide to turn into slaked lime?

A

water

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13
Q

give the observation for adding water to calcium oxide to make slaked lime

A

fizzing
steam given off
crumbling

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14
Q

what is the chemical name for slaked lime

A

calcium hydroxide

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15
Q

give the balanced symbol equation for calcium oxide turning into calcium hydroxide

A

CaO + H2O —> Ca(OH)3

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16
Q

if calcium hydroxide is dissolved to make a solution what is this solution called?

A

calcium hydroxide solution (aq)

or limewater

17
Q

what is limewater used to test for?

A

carbon dioxide

18
Q

give a symbol equation for the reaction where limewater is used to test for carbon dioxide

A

Co2 –> CaCO3 + H2O

19
Q

what colour is copper carbonate?

A

green

20
Q

what is formed when copper carbonate undergoes thermal decomposition?

A

copper copper oxide + carbon dioxide

carbonate —->

21
Q

give the word equation for thermal decomposition of copper carbonate

A

CuCO3 —> CuO + Co2

22
Q

what happens when you heat up carbonates?

A

nothing, they don’t decompose

23
Q

describe an experiment you could do to investigate the stability of carbonate compounds?

A

measure mass before and after thermal decomposition

GCSE chemistry (8 decks)

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