the higher the polarity on a functional group, the more reactive it is. If a functional group is non-polar, it doesn't react with anything without a LOT of energy.
For example: a hydrophobic functional group would avoid water at all cost, because it is non-polar, whereas water is polar. Try not to think of this as a "likes repel" sort of thing, but rather that a non-polar functional group is one that has no charge on it, and a polar group has a (+) or (-) charge. While it is true that two (+)'s will repel each other, if there is a (+) functional group, there is likely a (-) one on the other side, which would cause the molecule to flip around and bond that way.
Essentially, polarity of a functional group functions as the + or - charge used to bond to the opposite charge of another molecule/functional group.
convalent bonds have the greatet bond energy.
Two angled polar bonds
No, the atoms in a covalent bond are shared between atoms and even when the sharing is not equal, polar covalent bonds, it is still sharing and not electron is pulled into another elements valance shell.
Covalent bonding.
Oxygen is an element, not a bond. It will form polar bonds with most other elements, though because it is very electronegative. However, when it bonds with itself as in O2 the bonds are nonpolar.
Covalent bonds have ionic "character" when they are polar. The more polar, (greater the electronegativity difference) the more ionic character.
Atoms share electrons in covalent bonds.
Sodium chloride has ionic bonds.
Animo acids
Sharing of electrons. Generally this involves pirs of electrons forming bonds.
Two pi bonds and one sigma bond.
convalent bonds have the greatet bond energy.
A polar covalent bond is a type of chemical bond where electrons are unequally shared between two atoms. This creates a partial positive charge on one atom and a partial negative charge on the other. Polar covalent bonds occur between atoms with different electronegativities.
Animo acids
Yes, water has polar bonds, and is a very polar molecule.
Convalent bonds
Two angled polar bonds