Physics 9-3-20 Acceleration

PHYSICS: Loved watching you “discover” acceleration yesterday! Also – love how you began deriving formulas today!! I think you’ll come to find these are a ton better than some of the velocity problems you did. List what you are given and what you’re looking for – don’t forget things like “starts from rest” and “came to a stop.” Easy peazy! Okay, maybe not that easy! 😉

Chemistry 9-3-20 Scientific Notation

CHEMISTRY – Wow! That was different!! I like you better in person, but at least I got to see you 🙂

How did you do with scientific notation today? Have you conquered it yet? Remember you have to use the scientific notation button that is on your calculator or it will almost always give you the wrong answer!! If you can’t find the scientific notation button your calculator, text me a pic of it and I’ll help!

HOMEWORK UPDATE: Don’t do it tonight. I just realized there is too much conversion factor stuff on it, so we’ll do that tomorrow.

flickr photo by Robert S Donovan

Hon Chemistry 9-3-20 Using Density

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 applicaitons 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?