Minute Mystery: a man is lying unconscious in the middle of a muddy field. No footprints at all are...
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Minute Mystery: a man is lying unconscious in the middle of a muddy field. No footprints at all are near him (not even his own), and there is nothing in the field with him besides a green rock. Who is he? In pairs, answer the question and provide an explanation for the answer. A prize for the correct answer and a prize for the most creative answer will be awarded.
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Transcript of Minute Mystery: a man is lying unconscious in the middle of a muddy field. No footprints at all are...
Minute Mystery: a man is lying unconscious in the middle of a muddy field. No footprints at all are near him (not even his own), and there is nothing in the field with him besides a green rock. Who is he?
In pairs, answer the question and provide an explanation for the answer. A prize for the correct answer and a prize for the most creative answer will be awarded.
If you are writing this, please stop and listen!
What are: Cations? Anions?
What are: Cations – positive ions because they lost
electrons Anions?
What are: Cations – positive ions because they lost
electrons Anions – negative ions because they
gained electrons
What happens when you play with magnets?
Cations and anions are attracted to each other!
Metals look to become stable by losing electrons (e.g. Na)
Non-metals become stable by gaining electrons (e.g. Cl)
When a metal and a non-metal react they exchange electrons, forming an ionic compound
1. Draw the Lewis Dot diagram for each element
2. Exchange electrons and add atoms as needed
3. Show charges
Example: Sodium and Chlorine react
Be + F Ca + O
1. Write the name of the metal
2. Write the name of the non-metal with “ide” as its ending
E.g. Fluorine fluoride
bromine bromide
Li2O
Al2S3
Li2O
Lithium
Al2S3
Li2O
Lithium Oxide
Al2S3
Li2O
Lithium Oxide
Al2S3
Aluminum
Li2O
Lithium Oxide
Al2S3
Aluminum Sulfide (Sulphide)
The Paper Exercise◦ Everyone gets a piece of paper◦ Everyone needs to close their eyes and listen to
the instructions (eyes must stay closed!)◦ No questions are allowed
Why is listening so important? When working in groups, is listening
enough? How do you deal with different
perspectivies?
Naming worksheets◦ Don’t do the formula questions yet
1. Write the symbol of the metal and the symbol of the non-metal
2. Write the charge of each symbol at the top right
3. Criss-cross the charge number to the bottom of the other ion
4. Re-write your answer and reduce the numbes if needed
Calcium Fluoride
Magnesium Oxide
Calcium Fluoride1.Ca F
Magnesium Oxide
Calcium Fluoride1.Ca F2.Ca2+ F1-
Magnesium Oxide
Calcium Fluoride1.Ca F2.Ca2+ F1-
3.Ca2+ F1-
Magnesium Oxide
Calcium Fluoride1.Ca F2.Ca2+ F1-
3.Ca2+ F1-
1.CaF2
Magnesium Oxide
Complete the worksheets
