Question

lesson 2.2 review

1. what does it mean when a molecule is said to be “polar”?
2. why is water such a good solvent?
3. what is a buffer? why is it useful to cells?

Explanation:

For 1, polar molecules have unequal charge sharing. For 2, water's polarity and hydrogen - bonding enable solvation. For 3, buffers regulate pH crucial for cell function.

Answer:

1. Uneven charge distribution.
2. It's polar and forms hydrogen - bonds.
3. A substance resisting pH change; maintains cellular pH.