Water, pH and Macromolecules
A compound that is capable of forming hydrogen bonds with water

does not dissolve well in water
is probably held together by noncovalent bonds
should act as a good buffer for acids and bases
contains at least some polar covalent bonds

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Water, pH and Macromolecules
Which of the following character does not apply to water?

The covalent bonds in water are highly polarized
The water molecule readily forms hydrophobic interactions
All three atoms in the water molecule readily form hydrogen bonds
The water molecule is asymmetric

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Water, pH and Macromolecules
Salt dissolves well in water as water molecules

surround the ions because of their charge but do not form hydrogen bonds
form hydrogen bonds with the positively and negatively charged ions
share electrons with the ions to make polar covalent bonds
make nonpolar covalent bonds with the positively charged ions only

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