Water, pH and Macromolecules
Which of the following statements about water is correct?

Polar substances that can form hydrogen bonds will dissolve in it
All of these
It is critical for many of the chemical processes found in living systems
Nonpolar substances like oils are not soluble in it

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

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

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

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

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