asking for help / myLot

China

September 28, 2009 10:18pm CST

I saw a setence'salt crystals tend to break at right angles making each grain of salt look like a little cube.and i dont know the mean of the work break.i look up it in the dictionary ,but didt get it .so i want to ask for help.can you give me a detail explaination including the example sentences,please ! thank you very much .

1 response

rmorefield

@rmorefield (941)

• United States

29 Sep 09

a "cube" of salt - salt under magnification

The soduim and clorine molecules join and make salt. This is called "sodium chloride". When they stick together, they look a little like an ice cube. The structure of the atoms is: NaClNaClNaCl ClNaClNaClNa NaClNaClNaCl ClNaClNaClNa NaClNaClNaCl

fishpool

@fishpool (186)

• China

6 Oct 09

thanks for your help.