Chemistry 9-12-18 Chapter 2 Test Practice & Help Session

CHEMISTRY – Wow! Is your mind blown when you think about all that you’ve learned to do in chapter 2?

Here’s practice on some of the problems from this chapter. Here’s the vodcast from the “day before the test practice”,and I also posted below that a help session that will have some extra practice, BUT the batteries died about 13 minutes in, so no audio after that, but you can watch how we worked problems.

Remember, don’t just read your notes – practice your notes, practice the problems, practice the memorization!! If you haven’t done so already, make sure to check out the Chapter 2 Stuff to Know sheets under the Test Info tab. Great info!!! And continue to practice with these online games and quizzes:

Online Textbook: There are wonderful Interactive Review Games with your online text. First open chapter 2. Then click on the the Student Premium tab, then Interactive Review Games.

sciencegeek.net has great interactive quizzes with questions like I’ll ask on the test. Find the unit that corresponds to the topics we’ve been studying and begin to quiz yourself. There are answers, too!

God bless you as you study! I’m praying for you!!


flickr photo by qthomasbower

Help Session:

Chemistry 9-10-18 Relationships Among Data

CHEMISTRY – Can you believe it? We’ve finished the chapter! Here’s the lecture from today on direct and inverse proportions AND a look at one of the conversion factor problems from last night’s worksheet.

Speaking of tests, have you gone to the TEST Info tab yet? You might find something that will help a lot as you study!!!

Also, don’t forget to check out the Interactive Review Games with your online text and also the review at sciencegeek.net. Great practice with both memorization, concepts and problem solving!

God bless you as you study this week! I’m be praying for you!!

Chemistry 9-5-18 Homework Conversion Factor & Density Problems

CHEMISTRY: Here is our discussion from today of some of the conversion factor problems from the homework. Are you getting an answer, or are you showing proper work that shows that you understand the process? Are you practicing them the correct way? You want to get great at working these yourself, not just get great at watching me work them!

What about the test coming up – have you started preparing? Be sure and check out the Test Info tab here on the website!


flickr photo by Enokson

Chemistry (and Honors) 9-4-18 Using Density

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?

Need more practice? Help session TOMORROW morning, 7:30ish A.M.

Chemistry 8-30-18 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 a HELP SESSION?


flickr photo by vnysia

Chemistry 8-29-18 Significant Figures HW & Scientific Notation

CHEMISTRY – I like the way you are catching on to significant figures! Here are the last of the notes on calculating with Sig Figs!

And great job with scientific notation today! Did you realize your calculator was so smart? Have you conquered it yet?

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!!


flickr photo by Robert S Donovan

Chemistry 8-28-18 Significant Figures

CHEMISTRY: I LOVE the way you are catching on to significant figures! And how will you really unlock the puzzle of sig figs? Practice!!

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!!


flickr photo by Henry Hemming

Chemistry 8-24-18 Percent Error and Uncertainty

CHEMISTRY – Here’s our really short second look at percent error problems, and also uncertainty. Keep that formula handy!

Hey are you studying for the SI quiz?!! Super important – you’ll use that stuff all year long!

Also, how’s the Scavenger hunt going? Did you notice the deadline? Make double sure you give yourself plenty of time!!


flickr photo by jambe

Chemistry 8-23-18 Derived Units & Intro to Accuracy & Precision

CHEMISTRY – So you think Goodman Road is getting crowded? How’s this for a “high density” city? Great work with derived units today. Now on to accuracy and precision. Can you apply what you’ve learned? Hmmmmm………


flickr photo by chromogenic

Chemistry 8-22-18 SI Measurements

CHEMISTRY – Hey guys, so is all the info on SI measurements starting to come back to you? Here’s the lecture from today. I’m sure it’s mostly review from your physical science days, but it’s a great opportunity to refresh what you’ve learned and to get ready to begin using it!

Did you remember the prefixes and units? Start work on memorizing them NOW – SI quantities, units, and SI prefixes. For the prefixes, also make sure that you can tell me how many of something in the larger one. (That’s what I explained in class.) The quiz on them will be next Wednesday, August 29.


flickr photo by Nils Geylen