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4.1: The Atomic Theory

Difficulty Level: At Grade Created by: CK-12

Student Behavioral Objectives

The student will

  • give a short history of how the concept of the atom developed.
  • describe the contributions of Democritus and Dalton to the atomic theory.
  • summarize Dalton's atomic theory and explain its historical development.
  • state the law of definite proportions.
  • state the law of multiple proportions.

Timing, Standards, Activities

Timing and California Standards
Lesson Number of 60 min periods CA Standards
The Atomic Theory 1.0 1g, 1n

Activities for Lesson 1

Laboratory Activities

1. None


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1. None

Extra Readings

1. None

Answers for The Atomic Theory(L1) Review Questions

  • Sample answers to these questions are available upon request. Please send an email to teachers-requests@ck12.org to request sample answers.

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Date Created:

Aug 18, 2012

Last Modified:

Sep 03, 2015
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