Experiments that Revealed the Structure of an Atom

Lavosier Law

The concept of the conservation of Mass. All number of atoms on the left are the same as the number on the right.

Proust Law

Law of definite proportions. For molecules to be the same, they must have the same ratio of elements.

Dalton’s Law/Law of multiple proportions

The same types of elements combined in different subscript proportions give different molecules.

Avogadro

Volume of a gas is proportional to the number of molecules. Like two sized balloons with different gases, same number of molecules, but different weight.

Gay Lussac

Reaction of gases occur with a fixed ratio of volumes.

Cazzaro

Relative mass of elements is correct and atoms are the building blocks of molecules.

What are the polyatomic ions we need to know is asked what the molecule will break into if thrown into a solution?