Laws of Definite Proportions & Multiple Proportions

The Law of Multiple Proportions was derived by who?

John Dalton (1766-1844) between 1803 & 1807.

The law of Multiple proportions is comparing

2 different compounds made up of the same 2 elements. The division of these 2 ratios should equal a simple whole number ratio.

Both the law of Multiple and definite proportions relate to

Daltons atomic theory

What did Daltons Atomic Theory propose?

Proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.

Who put forth the Laws of Definite Proportions?

Put forth by Joesph Louis Proust (1754-1816) in 1800

What does the Law of Multiple proportions state?

States if two elements A and B combine to form more than one compound, the masses of B that can combine with a given mass of A are in a ratio of small whole numbers.

What does the law of definite proportions state?

States that different samples of the same compound always contain its constituent elements in the same proportion by mass regardless of the source.