2.1 Limestone And Its Uses Flashcards
1
Q
Why do we quarry large amounts of limestone rock?
A
Because it has many uses
2
Q
What three things can limestone be used for?
A
For building, to make cement and to make calcium oxide
3
Q
How do we make concrete?
A
By mixing cement with sand, aggregate and water
4
Q
What is limestone many made up of?
A
Calcium carbonate
5
Q
What does calcium carbonate decompose to make when heated strongly?
A
Carbon dioxide and calcium oxide
6
Q
What is the type of reaction called when calcium carbonate decomposes?
A
Thermal decomposition
7
Q
What does ‘thermal decomposition’ mean?
A
Breaking down by heating
