Daily Archives: August 29, 2023

Chemistry 8-29-23 Conversion Factors

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CHEMISTRY: Great job with our start on using conversion factors to work problems! Hopefully this was a review from your earlier academic life. We’ll crank it up a notch tomorrow!! 😉

Remember, this isn’t just about getting an answer – some of you can do that in your head. This is about being able to convert from one unit to another using the Q-formula. (And yes, you have to do it that way!)

Make sure you practice using your notes tonight, it’ll help you remember the steps we followed today in class!

Speaking of being ready – are you ready for the quiz? The first part of the vodcast has some hints about what it will look like. Be sure and check the syllabus to make sure you are studying everything you’re supposed to be learning.


Photo by Sharon McCutcheon on Unsplash

Hon Chemistry 8-29-23 Using Density & HW Review

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HON CHEMISTRY – Here’s a pic of some “high density” koi that I saw in Hawaii (at the Dole Pineapple Plantation, of all places!). Great applications of density today! Remember, in chemistry we use math as a tool, therefore we might work problems a little differently in chemistry than you do in your math class.

When working these problems, don’t forget to follow the problem solving steps we discussed today:

  • Analyze – write down what you’re given and what you’re looking for
  • Plan – write a formula where you isolate the unknown on one side by itself
  • Compute – plug in your data, numbers and units; then cancel the units, and if they cancel correctly, go on to the calculator. Be sure and give your answer what the correct units.
  • Evaluate – does your answer make sense, have you used the correct units, do you have the correct sig figs?