Day 7

Day 7

Module 5 Bell Ringer

History of the Periodic Table of Elements

• What Chemical Properties were used

• Organization

Multiple Choice

How did Mendeleev decide wh

ich elements should be

placed in the same group of the periodic table?

• He grouped elements with similar chemical and

  physical properties

• He grouped together elements with the same number

  of valence electrons.

• He ordered the elements

  by atomic number, and the

  pattern appeared

• He arranged the elements

  across the table from most

  reactive to least reactive

Multiple Choice

Mendeleev organized the chem

ical elements based on

their

• properties

• valence electrons

• atomic number

• charges

Multiple Choice

Moseley discovered th

at elements with

similar properties

occurred at regular interval

s when the elements were

arranged in order of increasing

• Atomic Mass

• Density

• Atomic Number

• Radioactivity