中二的i.s acid & calcium carbonate

1. 我想你的意思是含越多calcium carbonate corrode 得越快？
calcium carbonate will react with acid, 所以物質含越多calcium carbonate，react 得快些都合理。
2. acid can corrode metal, carbonates, 濃(concentrated)acid corrode skin, cloth..............

3. when acid react with reactive matals, hydrogen will be produced.
when acid react with carbonates, hydrogen and carbin dioxide will be produced.

4. 物質被稱為acid是因為當溶於水會釋出氫離子，而carbonates 含有碳及氧原子，reaction 後，原子重新組合，氫離子組成氫氣，carbonate (碳酸離子)組成carbon dioxide(二氧化碳)

5. 物質被稱為acid是因為當溶於水會釋出氫離子，carbon dioxide 溶於水會有氫離子釋出，所以carbon dioxide is acidic. this can explain why soft drinks is acidic, and rain (not acid rain, i mean normal rain) is acidic too.

1. acid只係會在同calcium carbonate在跟它發生化學作用時,會產生carbon dioxide. 無話cor唔corrode得快d.
2. acid 平時係都會corrode thing,唔一定係metal的
3.唔係,有d物件遇上acid唔一定排出hydrogen,好像copper(銅)是不會產生作用,而只有含有calcium carbonate的野(像marble/limestone),先會排出CO2
4.唔係好明hydrogen & carbon dioxide的reason 係咩,因為我讀英文is
5.CO2好像不是ACIDIC. 有ACID RAIN 係因為sulphur dioxide and nitrogen oxide這兩種pollutant造成,唔係因為carbon dioxide,carbon dioxide係令到global warming