limestone Flashcards
what is the formula for calcium carbonate?
CaCO3
give some uses of limestone
building materials
cement
road making
what metal is extracted using limestone?
iron
give some advantages of quarrying
provides jobs
provides building materials
give some disadvantages of quarrying
dust pollution
noise pollution
spoils the landscape
what is the word equation for calcium carbonate decomposing into calcium oxide?
calcium heat calcium carbon
carbonate —–> oxide + dioxide
give some observations for the reaction of calcium carbonate decomposing into calcium oxide
fizzing
steam given off
crumbling
what is the correct science term for the breakdown of calcium carbonate into calcium oxide?
thermal decomposition
give the symbol equation representing the thermal decomposition of calcium carbonate
CaCO3 –> CaO + Co2
what is the colour of calcium oxide?
white
what is the chemical name for quicklime?
calcium oxide
which liquid is added to calcium oxide to turn into slaked lime?
water
give the observation for adding water to calcium oxide to make slaked lime
fizzing
steam given off
crumbling
what is the chemical name for slaked lime
calcium hydroxide
give the balanced symbol equation for calcium oxide turning into calcium hydroxide
CaO + H2O —> Ca(OH)3
if calcium hydroxide is dissolved to make a solution what is this solution called?
calcium hydroxide solution (aq)
or limewater
what is limewater used to test for?
carbon dioxide
give a symbol equation for the reaction where limewater is used to test for carbon dioxide
Co2 –> CaCO3 + H2O
what colour is copper carbonate?
green
what is formed when copper carbonate undergoes thermal decomposition?
copper copper oxide + carbon dioxide
carbonate —->
give the word equation for thermal decomposition of copper carbonate
CuCO3 —> CuO + Co2
what happens when you heat up carbonates?
nothing, they don’t decompose
describe an experiment you could do to investigate the stability of carbonate compounds?
measure mass before and after thermal decomposition
