Mendeleev and Chemical Periodicity

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Presentation transcript:

Mendeleev and Chemical Periodicity Section 1 History of the Periodic Table Chapter 5 Mendeleev and Chemical Periodicity When elements were arranged in order of increasing atomic mass, similarities in their chemical properties appeared at regular intervals. Periodic - repeating patterns

Moseley and the Periodic Law Section 1 History of the Periodic Table Chapter 5 Moseley and the Periodic Law Moseley arranged elements according to atomic number, rather than atomic weight. The Periodic Law - physical and chemical properties of the elements are periodic functions of their atomic numbers.

Periodicity of Atomic Numbers Section 1 History of the Periodic Table Chapter 5 Periodicity of Atomic Numbers

The Modern Periodic Table Section 1 History of the Periodic Table Chapter 5 The Modern Periodic Table The Periodic Table - arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group.

Periodic Table Overview Visual Concepts Chapter 5 Periodic Table Overview Click below to watch the Visual Concept. Visual Concept

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