Chemistry 9-3-19 Using Density & Conversion Factors

CHEMISTRY – Hey guys, here’s a pic of some “high density” koi that I saw in Hawaii (at the Dole Pineapple Plantation, of all places!). Great review on density problems today, and more! 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?

Physics 9-3-19 Acceleration, Pt. 2

PHYSICS: Watch out for kitty cats in the road!! Good job with the derivations of acceleration formulas today! You’re doing really well with them – stay with it! Carefully examine what you know with the formulas you have that might fit. And if they don’t, examine what you do know that could lead you to what you need to know. You know? 🙂

Tonight’s problems may be a little challenging, but you can do it!! Do you need some extra practice rearranging the formulas, or just working the problems? Help session?


Photo by Camilla Coffey on Unsplash