AQA GCSE Chemistry Unit 1 3.2 Limestone and buildings materials
- Created by: revisieacocobean
- Created on: 13-05-16 18:53
View mindmap
- Lime stone
- Building Material
- Cement
- Limestone heated in a rotary kiln (turns to mix everything)- Thermal decomposition occurs
- Calcium Oxide released and mixed with chemicals in clay
- Roasted product is ground to form a paste
- Calcium Oxide released and mixed with chemicals in clay
- Mortar
- Cement+ sand
- -Can be mixed on site -re-absorbs some CO2 during production
- Concrete
- cement mixed with sand, aggregate and water
- -Cheap-Easy to store
- Limestone heated in a rotary kiln (turns to mix everything)- Thermal decomposition occurs
- Cement
- CaCO3
- Thermally decomposed to make CaO and CO2
- CaO reacts with water to produce Calcium hydroxide (an Alkali) and energy
- Reacts with acids to produce CO2, a salt and water
- Reacts with CO2 to produce CaCO3- a white precipitate (turns lime water cloudy)
- CaO reacts with water to produce Calcium hydroxide (an Alkali) and energy
- Damaged by acid rain
- Thermally decomposed to make CaO and CO2
- Building Material
Comments
No comments have yet been made