Limestone

Question 1

Name the three parts to a risk assessment

Answer 1

Hazard, risk, control measure

Question 2

describe limestone cycle

Answer 2

1)Limstone -calcium carbonate-CaCo3
  ADD CO2 ---> 
2) quicklime - calcium oxide - CaO
  ADD H2O --->
3) slaked lime - calcium hydroxide -                       
    Ca(OH)2
   ADD MORE H2O --->
4) limewater - calcium hydroxide solution - Ca(OH)2 (aq)
 ADD CO2 --> cycle starts again

Question 3

What do you add to calcium carbonate (limestone) to get to calcium oxide (quick lime)??

Answer 3

CO2 (g)