Reflection: Modeling Sodium (Na) Reaction Demonstration - Section 2: Teacher Demonstration


I often explain the Octet Rule (atoms combining so as to have eight electrons in its outer electron shell) as atoms being jealous of the Nobel Gases (He, Ne, etc..). Atoms trade and share electrons to complete their outmost electron shell. It easier to explain this concept as 'envy' rather than trying to explain the actual chemical process to eight graders. I make a point to always tell my students that atoms are NOT living things and they do NOT have emotions. I have known many chemistry teachers that use this example, but I would not want any of my students to create the misconception that atoms are living organisms.

  Personification of atoms to explain the Octet Rule
  Modeling: Personification of atoms to explain the Octet Rule
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Sodium (Na) Reaction Demonstration

Unit 5: Chemical Reactions
Lesson 5 of 11

Objective: Students will be able to observe the transfer of electrons on a large scale using models then compare that to the actual chemical reaction.

Big Idea: Explosions = Student Success!

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