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Chemistry: Atomic Theory

This chapter outlines the history of the Atomic Theory, going back to Democritus, the Alchemists and John Dalton. We will learn about the Law of Definite Proportions and of Multiple Proportions. Then we will study atomic terminology and the properties of electrons, protons and neutrons. We will define an atom's atomic number, its mass number and an isotope. There are review questions and a vocabulary section at the end.

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