Lesson 4.2.3 The noble gases

• Chem
• Secondary Education
• Age 13

Today's Lesson Goals

• explain why helium belongs to group 8 elements
• create a simple info-poster about neon, argon, krypton, xenon, and radon’s properties
• evaluate other groups’ posters using a rubric

Enquiry question: Why does Helium belong to the Group 8 elements of the PT if it only has 2 electrons?

Understanding key concepts

The melting and boiling points of noble gases decrease as you go down the group.

TRUE

FALSE

What happens to the size of the atoms as you go down group 8?

1. decreases
2. increases
3. stay the same
4. nothing happens

What similarity is there in the structure of the group 8 atoms?

Suggest why the noble gases is called group 8. 

Collaborative Work

Quick Task: Instructions

With your teammates, make a poster about. 

• T1. Neon 
• T2. Argon
• T3. Krypton
• T4. Xenon
• T5. Radon

Include: Name, Symbol, Structure, Boiling and Melting points, Uses

COLLABORATIVE TEAMS

Team 1

Moniroth

Yali

Korng

Nary

Team 2

Nich

Kateka

Kimsuor

Team 3

Colawin

Rita

Vennessa

Team 4

Ponnareay

Phimean

Nalin

Team 5

Kimmeng

Keriya

Neath