a molecule is made of atoms chemically combined / bonded
covalent_linking is not chemical_bonding. methanol_molecule is molecule. mating_factor_molecule is molecule. atom is molecular_component. mating_factor_molecule is not molecule. mating_factor is molecular_material. double_helixed_molecular_structure is molecule. chemical_bonding is connecting. covalent_linking is chemical_bonding. double_helixed_molecular_structure is not molecule.