9/28 HS Chem Recording - Density

https://youtu.be/z4H-44JHI1k

9/28 Chemistry class and homework due 10/5

Hi folks,

Today we worked on two areas of focus.  One, learning to measure with precision using measuring tape and graduated cylinders.  And two, working in two different ways to measure the volumes of various items.

Two different things for homework this week:

First, go to this website .

1. On the page of the website with the water containers and the large graduated cylinder,  I want you to attempt to fill the cylinder to the following amounts.  13.5, 17.5, 23.5 and 39.5 Once you think you've filled it to those amounts, click on the "read the measurement" button to check your answers.  Nothing to write/turn in here.  Just practice reading the instrument. To get this to work, you need to drag the water to the top of the cylinder and then click on it.  Hold down the "click" to fill the cylinder.  

2. On the next page with an interactive, (you'll see several different instruments and colors) enter in the measurements for each container.  Check your answers.  Please write your answers and turn them in.  Also, tell me which one of the four containers would you use to get the most precise measurements.

3. On the last page of the interactive, find the volume of the solid and write it down on paper to hand in as well.

ALSO:

Read pages 11-30 in the text book.

Do Review questions #'s 11 - 44

ALSO:

I've included the data table for today's measurements.  After class I went ahead and did an immersion of the different items myself.  My measurements seem to be a bit different from many of the others.  :)  So, please give me at least four different reasons why so many of our measurements could have been so far off.  Your statements can refer to either one or both of the measurement systems we used today.

Whitfield is fixed!

Hi folks,

Whatever was wrong with Whitfield road has been repaired.  Everything is back to normal.  (At least as far as that goes.  :)   )

Best,

Jim Mueller

(919) 907-3217

Recording of 9/21 Chemistry Class - Sig figs and Scientific notation

https://youtu.be/d-eDkXdgZ-I

9/21 Chemistry update and homework due 9/28

Hi folks,

Today we spent time going over some basic but important information dealing with using numbers in chemistry.  We discussed scientific notation, significant figures and how to add and multiply with them.

Homework due next week is to do the enclosed .pdf.

The page numbers are strange on this so do the problems on the page marked 55 in the upper right hand corner and the problems on the page marked 58 in the upper right hand corner.  Don't worry about page 54 unless you want more practice (never a bad idea). Again, feel free to check your answers when you're done.  Remember though, this will be on next week's quiz so be sure you know how to do these problems.  If you get something wrong in the homework, know why.  It may come back to haunt you on the quiz.

.

Road Closure at Caerus

Hi folks,

Just a heads up for everyone. Whitfield road has a long-term closure due to Florence.
It goes from 86 to Turkey Farm Road.

You can get in from Erwin Road or Sunrise Road east of the school.  I think you can also get in from the north if you take 86 to Mt. Sanai to Turkey Farm.  (You may need to go past a road closed sign that way.  I had to do that on Monday.)

Chem class tomorrow is CANCELLED

Hi folks,

I'm going to make the call and cancel class tomorrow. The winds and storms are looking like they may be pretty scary around class time.

Good luck everyone! I hope everyone will be safe, secure and comfortable all weekend.

Best,
Jim Mueller

Chemistry Class

Hi folks,

I was all prepared to write a "Class is Cancelled" email but I'm not too sure now. From the looks of the weather at the moment, it looks like Friday may just turn into a rainy/windy afternoon. I hope you don't mind, but I'm going to wait until tomorrow to make the call about class on Friday.

Please don't hesitate to let me know what you are thinking about the day. If you are sure you are not going to make it, please let me know.

Here's hoping the weather stays as "calm" as it appears at the moment.

Best,
Jim Mueller