Question

These substances are all ____. H2O2 Li NaCl O2 Elements Pure Substances Molecules Compounds

Answer 1

Your answer is Compounds

Answer 2

The correct answer is compounds.

They are made of atoms which have different elements.

H2O2 Li Nacl O2 are compound because compounds are also molecules.

Compounds can be distinguished by a way how the atoms they do bind to one another.