HON CHEMISTRY: Great start on writing and naming chemical formulas, and you did it without me! Well, kind of. 🙂 Here’s the lecture from Friday. Friday we concentrated on binary ionic compounds, and Monday we’ll do compounds with polyatomic ions. Make sure to take time to practice, practice, practice this weekend. You’ll be as lost as ball in high weeds on Monday if you don’t!
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What is the reason that only molecular compounds are are written with prefixes and other ionic compounds are not? Do non-metals and metalloids have different bonding properties?
What would our observations be for the separating the mixture lab? Would everything not be included in the procedure, conclusion, and objective?
Luke – Heavens, no! What did you observe? Do you need a data table (YES!) and then what other observations did you have about every single step that you did?
When crossing over in the chemical formulas, do charges cancel like the numbers can?
For the mixture separatioin lab, do we answer all of the questions in the book?
Hope – I just posted it. From page 27 of your book: Analysis & Interpretation 1, Conclusion questions 1 – 4, and Extension questions 1 – 2.
Hope – Hmmmm….charges can cancel if they are equal, but opposite, but I’m not sure what you mean by numbers cancelling?
Ok thanks. When you have an two elements and they both have a plus two for a charge, do the plus two’s cancel?
Hope – You’ll never have two elements with the same type of charge, for example, both positive. You’ll always have one positive and one negative.
Ok thanks.
I watched the vvideo again and it really helped me! I’ve also been trying to write the formulas too.
Cailyn – Great!
For all binary molecular compounds, when using the numerical prefixes, do you always change the ending of the second element to -ide?
Drew – Yes!
Do coumpounds always cancel out their charges to be neutral?
John – Compounds are always neutral, so, yes, their charges always cancel.
when is our next lab make up day?
Ms. Skinner, when do you expect the next test will be?
I can’t wait to finish the lab tomorrow and start a NEW chapter friday!!