Positive and negative ions attract one another to form ionic compounds.
Atoms that share electrons form covalent compounds.
Organic compounds contain covalently bonded carbon.
- Ionic compounds form when positive and negative ions attract.
- Covalent compounds form when atoms share electrons.
Carbon usually forms covalent bonds.- Water is polar covalent.
It forms hydrogen bonds.
It dissolves most ionic compounds
— and many other compounds.
It forms hydration shells around charged ions.
It reaches its greatest density at 4oC.
- Covalent compounds form when atoms share electrons.
-
Organic compounds contain covalently bonded carbon.
Organic compounds are numerous and diverse because carbon atoms
can bond repreatedly in long chains or other shapes.- Important functional groups:
–OH alcohol
–CH=O aldehyde
–CO– ketone–COOH organic acid
–NH2 amine
amino acids have both –COOH and –NH2
- Important functional groups: