a question related to punctuation

should I use quotation mark " or apostrophes ' in the following sentence:

These ions connect to each other forming a two-dimensional "sheet".

(they just look like a sheet)

thanks.

[Tdol]

I'd use a single inverted comma- 'sheet',but I can't see why you can't use "sheet".

[ProudToBeMuslim]

Originally Posted by tdol

I'd use a single inverted comma- 'sheet',but I can't see why you can't use "sheet".

Punctuation is very important. :wink:
http://www.saddleback.edu/library/la...ish/punct.html
:mad:

[Tdol]

Not here.