Limestone - AQA GCSE Core

Revision notes on Limestone - AQA GCSE Core

HideShow resource information
  • Created by: Sophie
  • Created on: 03-01-12 12:38
Preview of Limestone - AQA GCSE Core

First 197 words of the document:

Limestone and building materials:
Limestone is a compound of Calcium Carbonate ­ CaCO3
Calcium Carbonate can be Thermally Decomposed
in a lime kiln.
Word EQn : Calcium Carbonate Calcium Oxide + Carbon Dioxide
Symbol EQn : CaCO3 CaO + CO2
Quicklime (Calcium Oxide) can be used to make cement or "cure" soil acidity.
When water is added to quicklime it produces Slaked Lime (Calcium Hydroxide)
CaO + H2O Ca(OH)2
Building materials from Limestone:
Limestone blocks
Cement = powdered limestone heated with powdered clay ­ it sets when mixed with
water and hardens quickly.
Concrete = cement + water + sand + crushed rock ­ can be reinforced with steel
rods and is good at resisting which squeeze or crush it.
Glass = powdered limestone heated with sand and sodium carbonate.
Mortar = slaked lime + water + sand used to hold buildings together. reacts with the
CO2 in the air to produce calcium carbonate.
Quarrying Limestone:
Need of building materials
More money for the local economy
Destroy natural habitats
Pollution due to sand + dust


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »