Chemistry 8-30-19 Conversion Factors Homework

CHEMISTRY: Lots of great practice today using conversion factors! How did you do on your homework? Do you need to do it again?

HOMEWORK UPDATE for Friday:Don’t do the homework on the syllabus for Friday. Instead redo Thursday’s homework showing correct work if you haven’t already or if you missed them the first time. Super important that you know how to do these for the rest of the year!!

Hon Chemistry 8-30-19 Conversion Factors, Pt. 2

HON CHEMISTRY: Great job using conversion factors to work more advanced conversions! It’s good to able to convert from one unit to another, but can you use that info to solve a real world problem?

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!). Now go forth and conquer!


flickr photo by A. Jarrett

Physics 8-30-19 Acceleration

PHYSICS: Loved watching you “discover” acceleration!

Also – love how you began deriving formulas! 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! 😉

Hon Chemistry 8-29-19 Finding Relationships Between Data

HON CHEMISTRY – You’ve learned to gather the “pieces of the puzzle”, now it’s time to put them together so they can have meaning! Here’s our look again at density, and then our overivew of direct and inverse proportions. Just brief info for the test for now, and we’ll put it to practice in a couple of activities after the test.

How’re you doing on these last problems? Are you able to pull together all we’ve done in this chapter? When working problems, don’t forget to follow these problem solving steps:

  • 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?

As you study, remember, don’t just read your notes – practice your notes, practice the problems, practice the memorization!! By the way have you had a chance to check out the Chapter 2 Stuff to Know sheet and the chapter 2 study suggestions sheet? They are under the Test Info tab.


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Chemistry 8-29-19 Conversion Factors

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!! πŸ˜‰

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!

If you need more practice on these or other problems, what about the HELP SESSION tomorrow morning? 7:00ish A.M. πŸ™‚


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Chemistry 8-28-19 Significant Figures, Pt. 2 & Scientific Notation

CHEMISTRY – I like the way you are catching on to significant figures! Here are the notes on calculating with Sig Figs – knowing how far to carry out your answer.

Remember, the best way to really learn all of the things from this chapter is practice, practice, practice! That’s the reason it’s so important to do your homework! I give it to you so you can practice and put together all we talked about in class ….cuz I love you! πŸ™‚

Also super important – SI quiz tomorrow! Make sure you are actively studying for it, not just looking over it!!


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Physics 8-27-19 Cars, Swimmers, & Emily, etc., Velocity Problems

PHYSICS: Great job thinking through the problems today!

Remember a few things: You weren’t born knowing how to do these – give yourself a little time. On the really good ones, just one formula won’t work – begin with writing what your know. These are some of the hardest problems we’ll work in physics – not because the formulas are hard, but because knowing how to reason through them is so challenging.

You are doing a great job! Some good advice – go work them again! I promise, it will be good for you. Remember, don’t open the solutions you wrote in your notes! Try them without it!! If you have to, peek, but then don’t stop until you can work the entire problem through without looking!


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Chemistry 8-27-19 Accuracy & Significant Figures

CHEMISTRY – Here’s our look at expressing accuracy with percent error and uncertainty. Keep that formula handy! We also began looking at significant figures today. Did you remember them? Use them and you will!

Two super important things: Make sure you are actively studying for the SI quiz! Also super important – keep up with your homework!! The reason I give it to you so you can practice and put together all we talked about in class ….cuz I love you! πŸ™‚

Be sure and check your syllabus!!


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