Class Blog 9/4/2013

Questions for today, 9/4/2013

-What the heck is this dimensional analysis this all about? Why should i care?

-What is the best way to prepare for a chem quiz?

-Practice, practice, practice

Conversions

Use conversion factors to turn one unit into another that’s unit can’t be changed correctly by simply moving a decimal.

We did much practice of this in class going over how to convert units on a handout worksheet for practice that can be found on the moodle page under "Unit 1 Handouts". If you missed today's lesson, or aren't still 100% sure on how to convert units, here's a link to a helpful video.
http://www.youtube.com/watch?v=w0nqd_HXHPQ&list=HL1378352416

Significant Figures Reminder:

Stations

At the end of class today, we did a short activity to review how to correctly measure units with the lab equipment including a buret, beakers, a graduated cylinder, ruler and thermometer.

Review List to Know

1. Chemical vs. Physical changes

2. Particular Nature of Matter (1.1)

3. Paperclip lab

4. Lab safety

5. Observation vs. Inference

6. King Henry Doesn't Use Dusty Crusty Mustard

     -K H D U d c m

7. metric conversions

8. temperature conversions- kelvin, celcius, fahrenheit 

 Quick Review:

1. Chemical Changes = Identity Changes  ;   Physical Changes = Identity Stays the Same

2. Define "matter" [in it's 3 forms (s) (l) (g)], "pure substance", "mixture" (heterogeneous and homogeneous), "element", and "compound".

3. Look over lab

4. Look at notes

5. Observation is something that can be seen vs. Inference, which is just an educated guess

6. Know order or Kilo Hecto Deka [UNIT] deci centi milli

7. move the decimal

8. look at unit conversions for temperature

Example Results for the Measurement Activity Done in Class

REMEMBER: QUIZ ON FRIDAY!!!!

              Don't forget to check Moodle for the homework!

Our Next Scribe will be...

Kate Maki!