Flashcards
C1 2.1 Limestone and its uses
Flashcards do conjunto (6)
- 1Why do we quarry Limestone?Because limestone has many uses, e.g building
- 2What is limestone used to make?Limestone is used to make calcium oxide & cement
- 3What is limestone mainly made up of?Limestone is mainly made up of calcium carbonate (CaCO3)
- 4What happens when calcium carbonate is strongly heated?When heated, it decomposes to make calcium oxide and carbon dioxide. This is done on a large scale in lime kilns. (thermal decomposition)
- 5What is the equation for the thermal decomposition of calcium carbonate?The equation is:
- 6What is thermal decomposition?The breakdown of a compound by heat