CHAPTER 2
ATOMS, MOLECULES
& IONS
202-NYA-05 – Winter 2021
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ATOMS, MOLECULES AND IONS
2.5 The modern View of the Atomic Structure
2.6 Molecules and Ions
2.7 An Introduction to the Periodic Table
2.8 Naming Simple Compounds
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ATOMS, MOLECULES AND IONS
2.5
THE MODERN VIEW
OF THE ATOMIC
STRUCTURE
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2.5 Modern view of the atomic structure
Macroscopic level Microscopic level
Element: pure substance which cannot be Atom: smallest possible particle of an el
broken down into two or more simpler
substances.
Consequences: • Atoms from a sample of a pure element are all identical (to some
extent)
• Different elements have different kinds of atoms
• Macroscopic properties emerge from the intrinsic properties of
individual atoms and how they interact with each other