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    Understandings 

    ● Positive ions (cations) form by metals losing valence electrons.
    ● Negative ions (anions) form by non-metals gaining electrons.
    ● The number of electrons lost or gained is determined by the electron confi guration of the atom.
    ● The ionic bond is due to electrostatic attraction between oppositely charged ions.
    ● Under normal conditions, ionic compounds are usually solids with lattice structures.

    Applications and skills 

    ● Deduction of the formula and name of an ionic compound from its component ions, including
    polyatomic ions.
    Guidance
    Students should be familiar with the names of these polyatomic ions: NH4+, OH–, NO3–, HCO3–, CO32–, SO42–, and PO43–
    ● Explanation of the physical properties of ionic compounds (volatility, electrical conductivity, and
    solubility) in terms of their structure.

    Additional Resources 

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    Bonding by Magnus Drechsler

    Chemical bonding overview videos 

    Check out the video and learn from your peers 
    Want to add your video?
    Use this access code - ​chemsitry8materials

    Materials in the layers of an Easel Painting 

    This video outlines the materials that are present in each of the  layers of an easel painting.
    Task :
    1. Watch the video and take notes 
    2. Use the picture to add to your notes
    3. Research about other art materials and try to determine  what type of bond is present in those chemicals 

     Innovation: Demonstrating understanding on chemical bonding in innovative ways

    Task:
    1. Get in groups of 2 or 3 students (also able to complete this activity on your own)
    2. Use the overview mindmap and Flipgrid videos, as well as the internet to research ionic and/or covalent bonding 
    3. Think about and discuss innovative ways to explain what ionic and covalent bonding is (see the videos below for some ideas like song or animal role play) 
    4. Plan your own innovative ideas and produce your video 
    5. Post your video on Flipgrid - access code: chemsitry8materials

    Examples of Songs 

    Role play (even with animals) 

    Student Practical: Growing your own crystal - ionic bonding 

    Task:
    1. Watch the video instructions 
    2. Get in groups 
    3. Collect copper sulfate powder 
    4. Adjust the method illustrated in the second video according to the amount of copper sulfate powder that you have - Be sure to leave extra copper sulfate to add to the solution from time to time during the time that the crystal is growing 
    5. Follow your adjusted method and grow your own crystal 
    6. Video record your process of growing your crystal and include any advice from your experience
    7. Post your video on Flipgrid 
    8. Peer assess other groups on Flipgrid - access code: chemsitry8materials

    Polyatomic ions quiz - Kahoot 

    Ionic bonding and ionic compounds 

    Task:
    1. Watch the video and take notes 
    2. Complete the exercises in the videos as you watch 
    3. Test yourself by taking the quiz below:

    Ionic bonding

    Ionic compounds 

    Dots and Cross diagram 

    Task:
    1. Watch the video and take notes
    2. Complete the exercises in the video

    Physical properties of ionic compounds that reflect the lattice structure 

    Task:
    1. Get in 4 groups 
    2. Select a property that your group is going to be focusing on from the following 4 options:
      1. Melting and boiling points (Pearson textbook page 145)
      2. Solubility (Pearson textbook page 145-146)
      3. Electrical conductivity (Pearson textbook page 146)
      4. Brittleness (Pearson textbook page 147)
    3. Research your property that you have selected using the textbook and other sources 
    4. Discuss your research in your group 
    5. Add all of your findings and discussion points with diagrams and pictures