HON CHEMISTRY – Hey guys, guess what I found – will it help you in working problems? Here’s an old review of a few harder/different conversion factor problems and a percent error problem snuck in at the end. Good luck as you begin studying for the test – did you remember that it’s just a week from today?

BTW – go to Edline and look under “Tests” and you might find something that will help a lot as you begin to study. Yes, it’s time to begin studying; no, it’s not too early. And if you need extra practice on anything, don’t forget the help session tomorrow morning! Make a list tonight of the problems you need help with or questions you have. See you tomorrow!

I’m really glad you have us put the Q formula on our paper before we actually work it. If I didn’t I’m sure I would be completly lost.

I agree with Mary Grace! From writing the formulas so much, I remember them better.

On our homework, it asked about sig figs in conversion factors. Do we count sig figs in conversion factors?

Rebecca – Not sure what it’s talking about – ask me tomorrow in class, ok?

I’m a little confused with scientific notation with sig figs. will that be covered at the help sessions tomorrow?

Ryan – Treat them like an ordinary number, just don’t go by the power of 10 to get the number of SF.

On number 58, it asks for sig figs, how do we determine sig figs in a conversion factor? On page 50, it says conv. factors are considered exact so would this also count our calculated conversion factors?

Drew – Go by the only thing that isn’t a conversion factor.

Ms. Skinner do we have to worry about the number of sig figs in conversion factors?

Does the percentage error formula have any units?

I am glad you taught us how to set up our formulas with the untis, so we could cross them out and see which units we have left over as a way to check to see if we did the problem right.

Hudson – Thanks! I’m glad it’s working for you!

thanks for the study tools Ms. Skinner. it seems legit and will help alot to study for our chapter 2 test!

Ms. Skinner, does the conclusion for the lab we started on today have to be a certain length?

Adam – Just enough. π

On number 10 for our homework tonight, its about direct and inverse proportions. Im not sure how to work it but i read the section. Are we going to go over this in class?

I was curious to know as where are homework is. It says Graphing Exercise 1 and I cannot find the location of Exercise 1 in our book. Where is it?

Mikul, look on the back of the syllabus. It tells you what to do on there.

Mikul – Where did you find the instructions for the “Mass from Density” lab? π

On Graphing exercise 1, 4d, what is meant by “the direction of line CD?”

John – The red line drawn between points C and D. Make sense?