Chemical bonds

when electrons are shared

when protons are shared

when oppositely charged atoms gain or lose electrons

when oppositely charged atoms gain or lose a proton

molecules

atoms

elements

7th graders

in a covalent bond

in an ionic bond

are usually salts

always metals

Carbon

Oxygen

Water

Salt

8

6

7

5

Contains 1 type of atom that is not chemically bonded to any other atoms.

Contains 2 or more types of atoms that are chemically bonded together.

Contains 2 or more types of atoms that are not chemically bonded together.

Contains at least 3 types of atoms that are not chemically bonded together.

Molecules are larger than compounds

Molecule is more generic and can include elements in which two or more of the same atom are chemically bonded

Compounds always contain carbon and hydrogen whereas molecules can contain other elements

Compounds contain chemical bonds whereas molecules do not have any chemical bonds

Permanent link

Linking atoms to existing compounds

Only formed between atoms

A lasting attraction