Building Atoms and Molecules
aligned to Develop Models To Describe The Atomic Composition Of Simple Molecules And Extended Structures. Emphasis Is On Developing Models Of Molecules That Vary In Complexity. Examples Of Simple Molecules Could Include Carbon Dioxide And Water. Examples Of Extended Structures Could Include Sodium Chloride Or Diamonds. Examples Of Molecular-level Models Could Include Drawings, 3-d Models, Or Computer Representations Showing Different Molecules With Different Types Of Atoms. Structure And Properties Of Matter Substances Are Made From Different Types Of Atoms, Which Combine With One Another In Various Ways. Atoms Form Molecules That Range In Size From Two To Thousands Of Atoms. (ms.ps1.a.a) Solids May Be Formed From Molecules, Or They May Be Extended Structures With Repeating Subunits (e.g., Crystals). (ms.ps1a.e)
Learning Objective
I can build models to show how atoms combine to form different molecules.
Lesson Flow
Watch Video
Atoms | Middle school chemistry | Khan Academy
Khan Academy
Guided Notes
Key concepts students will learn:
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An atom is the smallest piece of an element that still has all the properties of that element.
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The word 'atom' comes from the Greek word meaning uncuttable, because it was once believed that atoms could not be broken down any further.
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Atoms are incredibly tiny; a typical gold ring contains about one sextillion atoms, which is about the same as the estimated number of stars in the observable universe.
Practice
10 questions • Multiple choice & Short answer
Exit Ticket
“Explain how atoms are related to elements, using gold as an example.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
