further chem
amino acids:

zwitterion: proton from carboxylic acid can transfer to basic amine group
hence: intermolecular forces are ionic bonding
can act as a buffer (lots of places to de/protonate)
pH at isoelectric point
derive by noticing that
join together to form proteins with amide/peptide linkages
proteins breaks through hydrolysis into separate amino acids
multiple peaks in IR for amines because asymmetric and symmetric stretching