chem c1 jan 11

products of limestone:

• cement: limestone + clay + sand + water
• mortar: limestone + clay + sand + water >> mortar takes longer to dry, because it is made with more water, and therefore needs more time. In this time, it takes in CO2 which help harden it.
• concrete: limestone  + cement + chrushed rock + (reinforced steel)
• glass: limestone + sodium carbonate (soda) + silicon dioxide (sand) + HEAT>>

combustion

complete combustion:

• plenty of O2
• produces CO2 + water
• CO2 leads of course to global warming -- melting of polar ice caps >> rising sea levels                                              -- biodiversity in animals and plants >> variation >> natural…