9-15-11 Matter

Announcements:

Test on Thursday next week

Homework:

Webassigns, due 9/20/11

Atomic Level Pictures- 1-3 due Tomorrow

Today we learned more about matter and that matter has mass and takes up space.

We learned some vocab words:

Molecule- when any 2 or more atoms are bonded.

Compound- 2 or more different types of atoms are bonded.

Mixture- when 2 or more types of atoms or molecules are placed together.

Pure Substance (Element)- Only 1 type of atom/molecule

There are 116 different types of elements.

Along with Solids, Liquids, and Gases that we learned about yesterday we were given a brief description of what AQUEOUS is.

AQUEOUS (aq)- molecules dissolved by solution

next person: nodroJ

(hold a mirror to it)

9/13/11 - Conversions

Announcements:
Tomorrow, report straight to the Math Lab for class.

Homework:
Conversion 4 Sheet in notebook, due tomorrow
Webassigns, due 9/20/11

So, we started class by collecting the Glass Sample Labs we did yesterday, and checking Conversion 3 Sheet in the notebooks. We then went over conversions, including MPH to KMS (Miles per Hour - Kilometers per second):

55mi/hr * 5280ft/1mi * 1m/3.281ft * 1km/1000m * 1hr/60min * km/s ---> .025km/s

Then, we got a non-homework sheet on Dimensional Analysis Problems, and we took our quiz on Significant Figures, Scientific Notation, Density, ect. Remember, the main point right now is understanding Unit Conversion, so if you aren't too clear on it, look back on the sheets in your notebook and do the worksheet we were given today.

Now I've always hated doing this, but the next scriber is....
Landgren?

RIP (September 13, 1996)