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Assignment Details
Chem - Lab Questions
2021-2022
Date Due
Jan. 21, 2022
Additional Info
- Answer the lab Qs for the "Bonding in Solids" Lab
- Especially for Q. 1 (parts a-e), make sure you address all 3 or 4 of the relevant observations in terms of the bonding model.
- Let's pretend that we had tested MgF2 and found that it did NOT conduct in solid form, it DID dissolve and conduct when aqueous, and it had a very high melting point. A poor answer (because of not being thorough enough) might be: "MgF2 must be ionic, because it consists of a metal with a nonmetal and it conducted." A much improved answer would be this: "MgF2 must have ionic bonding, because its formula consists of a metal with a nonmetal. The ions don't conduct electricity when in solid form, because they are locked in the crystal lattice, unable to move. When dissolved, the ions become mobile, explaining the high conductivity. The salt is soluble because the charged ions interact with the polar water, which pulls the ions apart and dissolves them. Finally, ionic bonding is quite strong, explaining the high melting point."