Food group

Carbohydrate - quick energy
Protein           - building muscles & cells
Fat                  - insulate our bodies & longer term energy & build cell walls
Fibre              - help with defecation & digestion
Mineral          - good for bones & tenth & cells
Vitamin          - general helper substance - keep us health
Water             - keep us hydrated (70% water)

Science Key Words

1. aluminium 铝
2. anode 正极
3. bauxite 铝土矿
4. carbon 碳
5. carbon dioxide 二氧化碳
6. cathode 负极
7. crust 壳
8. cryolite 冰晶石
9. displacement reaction置换反应
10. electrolysis 电解
11. extraction 提取
12. gold 黄金
13. lead 领导
14. ore 矿石
15. oxidation 氧化
16. reactivity series 反应性系列
17. redox reaction 氧化还原反应
18. reduction 减少

Limestone

1.Common Name:Limestone
1.Chemical Name:calcium carbonate
1.Chemical Formula:CaCO3


2.Common Name:quicklime
2.Chemical Name:calcium oxide
2.Chemical Formula:CaO


3.Common Name:slaked lime
3.Chemical Name:calcium hydroxide
3.Chemical Formula:Ca(OH)2


4.Common Name:limewater
4.Chemical Name:calcium hydroxide solution
4.Chemical Formula:Ca(OH)2(aq)