importance Flashcards Preview

AQA Science B Unit 2 > importance > Flashcards

Flashcards in importance Deck (19):
1

cement

limestone heated with clay

2

cement use

make mortar and concrete

3

glass

limestone sand and sodium carbonate heated

4

concrete

cement sand gravel mixed with water

5

glass use

windows

6

concrete use

reinforced with steel rods make material stronger

7

mortar

cement and sand added to water

8

mortar use

brick laying

9

quicklime

limestone thermally decomposed to give quicklime + carbon dioxide
(calcium oxide CAO)

10

slaked like

quicklime CaO + water H2O --> slaked like (calcium hydroxide Ca(OH)2

11

copper use, why?

water pipes
high melt
does not react with water

12

lead use
why?

flashing on roofs
unreactive, malleable

13

copper - wiring

high melt
good conductor

14

aluminium use
why?

window frames
resistant to corrosion
malleable

15

ceramics properties
3

hard brittle solids
high melt
resistant to chemical attack

16

ceramic use

bricks/tiles - building/ decoration
bathrooms/toilets (pottery)

17

composites

combing 2 or more different types of material

18

composite- reinforced concrete

cement gravel sand water iron steel
nets, rode
buildings, dams, bridges

19

polymers properties
(2) why?

poor conductor- electrical/thermal insulation

waterproof- pipes/guttering