Modern Atomic Theory: Electron Clouds, Schrodinger & Heisenberg


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Near the end of the 18th century the first atomic theory was developed. Which of the following was not part of that early understanding?

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1. Heisenberg proposed the idea that if an electron moves as a wave, it would be impossible to simultaneously measure both its position and momentum. This idea is known as which of the following?

2. Which model can be described as negatively-charged electrons orbiting a positively-charged nucleus in definite paths?

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About This Quiz & Worksheet

Use this quiz/worksheet combo to test your understanding of the modern atomic theory and the theorists who developed it throughout recent history. The questions will quiz you on how electrons travel under and important discoveries related to modern atomic theory.

Quiz & Worksheet Goals

This quiz and worksheet will test you on the following:

  • Early atomic theory
  • Heisenberg's principle involving electrons moving as a wave
  • Electron clouds

Skills Practiced

These assessments allow students to test their knowledge by using the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related lesson about modern atomic theory
  • Interpreting information - verify that you can read information regarding early atomic theory and interpret it correctly
  • Defining key concepts - ensure that you can accurately define main phrases, such as electron cloud
  • Information recall - access the knowledge you've gained regarding how electrons travel

Additional Learning

Learn more about modern atomic theory by reviewing the accompanying lesson, Modern Atomic Theory: Electron Clouds, Schrodinger & Heisenberg. The lesson covers the following objectives:

  • Identify new theorists in atomic theory
  • Define electron
  • Learn when the new theory was developed