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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Parcerita on September 18, 2007, 09:10:56 PM

Title: Please help?
Post by: Parcerita on September 18, 2007, 09:10:56 PM

I need help with this questions. Which one is the right answer and if possible can you explain why? I think the answer is "b" but I'm not sure.

Question: Although water is a small molecule, it has some properties characteristic of a large molecule. Why isn't this behavior a contradiction?

a. Hydrogen bonds between molecules last only for a very short period of time.
b. The small water molecules form hydrogen bonds between many individual molecules.
c. Compared to other substances, water has a high heat of vaporization and specific heat.
d. Water is a polar molecule and is a good solvent of ionic substances.
e. Since the water molecule is composed of only three atoms, it is relatively small compared to other biological molecules.

Thanks!

Title: Re: Please help?
Post by: constant thinker on September 19, 2007, 08:43:09 PM

This (http://www.chemicalforums.com/index.php?page=forumrules) website is a good starting point. Number 4 will help you the most.