L10. Physical properties of ionic compounds

• Chem
• Secondary Education

• You can go to the bathroom until 12:40PM. Leaving the room during our session is NOT allowed.
• Keep your shirt tucked in. The person who is untucked will PRESENT A TOPIC NEXT WEEK.
• Prepare your chemistry stuff.
• Put your phone in the tray.

Before we begin:

Lesson 10

Physical properties of ionic compounds

05-10-2022

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• identify at least 5 physical properties of ionic compounds
• prove the identified properties through theoretical or practical evidences

Success Criteria

Language 

development

• physical properties
• melting and boiling points
• electrical conductivity
• soluble 
• aqueous 

Know the keywords

Important Keywords and Concepts

• Individual; written
• Do the important keywords activity. 
• You only have 7 minutes.
• Checking!

• Draw atom diagrams and electron configurations of sodium and chlorine atoms.
• Show the transfer of the outermost electron from sodium to chlorine.
• Write down the new electron configurations for resulting ions.
• Write down their charges.
• Explain that each ion attained a noble gas structure (example: Na+ is isoelectric with neon.)
• 
  

Steps in diagramming

Background knowledge

• Individual; written
• Write your hypothesis in the table given found on backside of your paper. 
• You only have 5 minutes.
• Checking!

Ionic compounds are usually _________ at room temperature.

1. liquids
2. crystalline solid
3. lattice
4. gases

Ionic substances have high melting and boiling points due to _________________________.

1. liquids
2. crystalline solid
3. lattice
4. the presence of strong electrostatic forces

The electrostatic forces act in all directions and only a small amount of energy is required to overcome them.

1. TRUE
2. FALSE

Which of the following has the strongest electrostatic force of attraction between its ions?

1. sodium chloride
2. magnesium oxide
3. aluminium chloride
4. potassium bromide

Ionic compounds are good conductors of electricity in solid state.

1. TRUE
2. FALSE

Electrical current can flow if there are freely moving charged particles such as __________ or ions present.

1. protons
2. electrons
3. wave

Ionic compounds are poor conductors in the solid state. Give ONE reason why this happens.

Writing your Conclusion

• Individual; written
• Write your final answers to the given questions.
• You only have 7 minutes.
• Checking!

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.

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• Thursday - NO SCHEDULED CLASS
• Friday - Giant covalent structures

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