Hydrogen Bond

A. a molecule containing a very large number of atoms, such as a protein, nucleic acid, lipid, or carbohydrate

B. a weak bond between two molecules that happens in polar molecules

C. a chemical substance that cannot be broken down into other substances. The basic particle that constitutes a chemical element is the atom, and chemical elements are distinguished from each other by the number of protons in the nuclei of their atoms

D. a strong bond between two atoms that share their elections