Limestone Cycle

Question 1

How was limestone formed in the beginning?

Answer 1

Millions of years ago the shells and skeletons of many marine organisms have fallen to the bottom of the sea and have been compressed by many layers of sediment

Question 2

What does limestone have a high percentage of?

Answer 2

Calcium carbonate CaCO3

Question 3

What is limestone used for irl

Answer 3

To build pretty buildings and roads etc because easy to work with etc

Question 4

What happens when you thermaly decompose limestone?

Answer 4

Turned to quick lime and carbon dioxide

Question 5

Quicklime is…?

Answer 5

Calcium oxide

Question 6

What is an endothermic reaction

Answer 6

Heat and thermal decomposition

Question 7

Calcium oxide + h2O (water) is?

Answer 7

Slaked line or calcium hydroxide

Question 8

When slaked like or calcium hydroxide is dissolved in water it creates?

Answer 8

Limewater

Question 9

How is limestone gained back from lime water?

Answer 9

When the test from co2 we get calcium carbonate or limestone

Question 10

Limestone is a s……….?

Answer 10

Sedimentary rock