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Chapter 5 Lesson 1. “Organizing the Elements”. I. Structure and History. A. Structure 1. Periodic – “repeated pattern” a. Ex: moon cycles, calendar, days of the week… b. Periodic Table – elements are grouped and ordered according to similar properties. B. History
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Chapter 5Lesson 1 “Organizing the Elements”
I. Structure and History A. Structure 1. Periodic – “repeated pattern” a. Ex: moon cycles, calendar, days of the week… b. Periodic Table – elements are grouped and ordered according to similar properties.
B. History 1. Mendeleev – Russian chemist who made 1st periodic table a. According to mass b. Predicted new elements
Predicted elements