3 concepts
Covalent Bonds and Other Bonds and Interactions
Covalent bonds result from a sharing of electrons between two atoms and hold most biomolecules together.
Ions and Ionic Bonds
Ionic bonds are attractions between oppositely charged atoms or groups of atoms where electrons are donated and accepted.
The Chemical Basis for Life
Carbon is the most important element to living things because it can form many different kinds of bonds and form essential compounds.