Hon Chemistry 8-29-17 Scientific Notation & Density Problems

HON CHEMISTRY – Great job with scientific notation today! Hard to believe that you’ll be working with things smaller than a grain of pollen! Did you realize your calculator was so smart? Have you conquered it yet?

Great review on density problems! 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 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?

Tomorrow let’s apply density a different way!


flickr photo by Robert S Donovan

Hon Chemistry 8-25-17 Significant Figures, Pt. 2

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

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! 🙂

Have a wonderful Sophomore Retreat!! BTW – when you get back, be sure and check your syllabus. There could be some important updates!! 😉


flickr photo by Igor Spasic

Chemistry 8-24-17 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 8-23-17 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? 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 30.


flickr photo by Nils Geylen

Chemistry 8-22-17 Using the Scientific Method, Pt. 2

CHEMISTRY – Great fun with Oobleck today! Were you successful in using the scientific method? Here is the rest of lecture from today on using the scientific method.

CAUTION: Be sure and read the questions on the Oobleck sheet VERY carefully as you answer! Lab sheets are due tomorrow in class.

Chemistry 8-21-17 Using the Scientific Method

CHEMISTRY – Great review today of the scientific method. I know you’ve heard it for umpteen years, but it is super important that you can APPLY what you’ve learned about the scientific method.

Speaking of that, after we finish the lecture tomorrow, you’ll have a great chance to practice using the scientific method tomorrow with Ooblek! Make sure you print and read the Oobleck lab sheet and bring it to class tomorrow!

Speaking of homework – the work from the textbook can be done with the online textbook. Do it on notebook paper, and you can use the back. Just make sure you number going down and not across, and skip a line between each question. Be sure and turn it in at the beginning of class tomorrow.

So do animals use the scientific method? Hmmm…..


Flickr photo by UK Ministry of Defense, Photographer: Harland Quarrington

Chemistry 8-17-17 Lab Safety Test

CHEMISTRY: Great job with evaporating today, and great job in lab this week! Wow – you’ve learned a lot!! God bless you as you finish up studying for tomorrow’s test!

Did you read the review post earlier? Here’s the info again. In addition to the lab safety packets and the lab safety video, this is some VERY IMPORTANT information to study

  • All the lab apparatus at your lab station and in the slide show – be able to identify it all and know what all the apparatus is used for.
  • Know the parts of the Bunsen burner and how to light one.
  • Know the parts of the balance and be able to measure mass with a balance AND volume with a graduated cylinder.
  • I’ll ask you about safety control equipment and where it’s found in the lab.
  • I’ll also have the safety symbols and the information they represent on the test
  • Make sure you can both set up or draw and label diagrams for filtering, boiling, evaporating, and heating intensely.

HUGE HINT: Go back and view the earlier posts/slide shows on Lab Apparatus, Lab Tour, Lighting a Bunsen burner, Measuring Mass and Volume, etc. All of these are VERY helpful for the test!!

Also, don’t forget that the entire Exp A-1 Procedures & Techniques packet (including observations for ALL of the procedures you did as well as ALL of the questions on pages 13 – 18) is due TOMORROW.

God bless you as you study! It’s a ton of information, but you can do it!! I’ll be praying for you!!

Evaporation of salt water

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Web Post Comments Ideas

Happy Wednesday! Are you having a difficult time understanding what a good web post comment is? In the future, you will probably be taking online classes where you will have to be part of online class discussion groups, and you’ll be graded on your comments and how you participate.

Here is a plan that will help you! Your goal is to have STAR Web Post Comments. Hokey title, but maybe it will stick! Click here on the STAR Web Post Comments Idea Sheet for ideas for good comments that will receive credit.

IMPORTANT: Make double dog sure you write your name in your web post the correct way. If your name/heading is not written correctly, you will not receive any credit for making the web post.

Still don’t know what to do?

  1. Click on the title of any web post from the week that I have made for your class.
  2. Scroll to the very bottom of it where it says “Leave a Reply” – you may have to scroll past comments from other people, but you can reply to those also!
  3. Enter your name correctly and your email.
  4. Type in your comment (see the info above.)
  5. Type in the Anti Spam characters in the space provided.
  6. Click Post Comment and you are done!

Chemistry 8-16-17 Filtering

CHEMISTRY: So how do you separate salt and sand? Did you conquer filtering? Make double sure of two things before tomorrow: 1) read the lab before you come to class to do it, and 2) get a head start on the questions at the end of the experiment packet.

Your test is coming up VERY SOON! Have you started studying? In addition to the lab safety packets and the lab safety video, here is some VERY IMPORTANT information to study

  • All the lab apparatus – be able to identify it all and know what all the apparatus is used for.
  • Know the parts of the Bunsen burner and how to light one.
  • Know the parts of the balance and be able to measure mass with a balance AND volume with a graduated cylinder.
  • I’ll ask you about safety control equipment and where it’s found in the lab.
  • I’ll also have the safety symbols and the information they represent on the test
  • Make sure you can both set up or draw and label diagrams for filtering, boiling, evaporating, and heating intensely.

HUGE HINT: Go back and view the earlier posts/slide shows on Lab Apparatus, Lab Tour, Lighting a Bunsen burner, Measuring Mass and Volume, etc. All of these are VERY helpful for the test!!

Also, don’t forget that the entire Exp A-1 Procedures & Techniques packet (including observations for ALL of the procedures you did as well as ALL of the questions on pages 13 – 18) is due FRIDAY.

God bless you as you study! It’s a ton of information, but you can do it!! I’ll be praying for you!!

filtering