Hi,
I just wanted to double-check my answers to see if they're correct.
So far, I have:
O=C-H is Aldehyde
CH-NH2 is Amine
CH-COOH is Carboxylic acid
O=C-OH is Carboxylic acid
C=O is Ketone
C-OH is Alcohol
O=C-NH2 is Amide
Let me know if these are (or are not) correct, thanks!