Giant Ionic and Covalent Structures

  • You can go to the bathroom before the start. Leaving the room during our session is NOT allowed.
  • Keep your shirt tucked in. 
  • Prepare your learner's book and notebook.
  • Put your phone in the tray.
Before we begin:
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Slide 1: Tekstslide
ChemSecondary Education

In deze les zit 24 slide, met interactieve quiz en tekstslide.

Onderdelen in deze les

  • You can go to the bathroom before the start. Leaving the room during our session is NOT allowed.
  • Keep your shirt tucked in. 
  • Prepare your learner's book and notebook.
  • Put your phone in the tray.
Before we begin:

Slide 1 - Tekstslide

Slide 2 - Tekstslide

  • build the giant structures of salt, diamond and graphite
  • present the model to the class
Lesson Goals

Slide 3 - Tekstslide

Slide 4 - Tekstslide

Slide 5 - Tekstslide

  • What conclusion can you make for this diagram?

Slide 6 - Tekstslide

  • "Opposite attracts."
  • In an ionic lattice structure, "electrostatic force of attraction" keeps the particles together.
MAIN IDEA

Slide 7 - Tekstslide

Slide 8 - Tekstslide

  • What is the difference between the structure of diamond and the structure of graphite?


Enquiry Question

Slide 9 - Tekstslide

  • each carbon atom bonds with four other carbons, forming a tetrahedron
Diamond

Slide 10 - Tekstslide

  • All the covalent bonds are identical, very strong.
  • There are NO intermolecular forces.
Diamond

Slide 11 - Tekstslide

Physical properties:
- does NOT conduct electricity
- very high melting point extremely dense and hard
Diamond

Slide 12 - Tekstslide

Slide 13 - Tekstslide

  • Each carbon atom is bonded to three others forming layers of hexagonal-shaped forms, leaving one free electron per carbon atom
Graphite

Slide 14 - Tekstslide

  • Free (delocalised) electrons exist in between the layers and are free to move through the structure and carry charge, hence graphite CAN conduct electricity.
Graphite

Slide 15 - Tekstslide

  • The covalent bonds within the layers are very strong BUT the layers are connected to each other by weak forces only, hence the layers CAN slide over each other making graphite slippery and smooth
Graphite

Slide 16 - Tekstslide

PHYSICAL PROPERTIES
- CAN conduct electricity
- has VERY HIGH melting point
- is soft and slippery, less dense than diamond
Graphite

Slide 17 - Tekstslide

Slide 18 - Tekstslide

Slide 19 - Tekstslide

3D Model-making
  • Group work
  • Make 3D model of:
- T1: Ionic
- T 2, 5: Diamond
- T3, 4: Graphite 
  • You only have 10 minutes.
  • Checking!
timer
10:00

Slide 20 - Tekstslide

Presentation

Slide 21 - Tekstslide

Slide 22 - Tekstslide

  • Tuesday - Properties of Ionic and covalent substances
  • Wednesday - Scientific investigation
  • Thursday - End of Unit 2 Test 
Up next!

Slide 23 - Tekstslide

Self - Evaluation
😁 - I can do this! I am ready to try something new.
😅 - I am getting there! I need a bit of help. I am a bit unsure. I might need to practice.
😬 - I need help! I don't understand this. I am not ready to move on yet.
timer
1:00
😁
😅
😬

Slide 24 - Poll