CHEMISTRY: Pretty cool, huh?!? Do you understand now how a balance works? No one asked me in class about the actual mass of the coin – were you planning on looking that up on Google? That’s a great plan! Or you can bring the coin you were using to school and mass it on one of the balances.

A couple of other things about doing and writing up thLABs:

• Yes – you ALWAYS do all the questions on labs.
•  Always to the extension on thLABs if there is one, but if you are not sure, ASK!
• The actual masses of the coins can be found on the Internet. Google it!!
• Yes, you find your percent error on each coin – make sure you show your work with formula and units!!
• Be sure and give yourself plenty of time to upload to the Google Drive Assignment Turn-In folder and Turnitin.com!

Holler if you have any other questions. Have fun with your lab!!

Image source: Alex Dean

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! 🙂

Be sure and be actively studying for the SI quiz!

CHEMISTRY 8-29-15 Significant Figures, Pt. 2 & Scientific Notation from Tammy Skinner on Vimeo.

<a href=”http://www.flickr.com/photos/booleansplit/3128473812/”>flickr photo by Robert S. Donovan</a>

CHEMISTRY – So which is more important, accuracy or precision? Great discussion on causes of error in the lab and how to prevent them!

So you’ve been using been using significant figures all along when you were measuring in the lab! Now the other half – using them in calculations will be no big deal at all! Take a stab at it tonight and we’ll finish up tomorrow.

Don’t forget to be studying for the SI quiz!!

Holler if you have any questions about the thLAB: Building Your Balance, or the SI Scavenger Hunt! Be sure and give yourself plenty of time!!

CHEMISTRY 8-28-14 Accuracy and Precision & Intro to Significant Figures from Tammy Skinner on Vimeo.

flickr photo by jambe

CHEMISTRY – Hey guys, so is all the info on SI measurements starting to come back to you? Here’s the lecture from Wednesday. 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, Sept. 3.

CHEMISTRY 8-27-14 Si Measurements from Tammy Skinner on Vimeo.

flickr photo by Nils Geylen

CHEMISTRY – Great fun with Oobleck today! Were you successful in using the scientific method?

Happy day, happy day, you got a textbook today! Books covers are due Friday – remember, no book socks.

Have you double checked Edline to make sure that you are good with all the lab assignments you are supposed to have turned in? BE SURE if you go back and make any changes that you write me a note about it and put the note in the Make-Up Work tray. Otherwise I won’t know you’ve changed anything. Come and talk with me if you have questions!

CHEMISTRY – Hey guys, here’s the lecture from Monday on 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, 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.

CHEMISTRY 8-25-14 The Scientific Method from Tammy Skinner on Vimeo.

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

CHEMISTRY: Great job in lab this week! Wow – you’ve learned a lot!! God bless you as you finish up studying for tomorrow’s test! In addition to the lab safety packets and the lab safety video, don’t forget 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 balance and the Bunsen burner. Also, 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. Also, make sure you can draw and label diagrams for filtering, boiling, evaporating, and heating intensely. Go back and view the earlier posts/slide shows on Lab Apparatus, Lab Tour, Lighting a Bunsen burner, etc. All of these are VERY helpful for the test!!

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!!

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