1. Thursday October 5th, 2007
Unit 2 Day 4

2. Drill What is the formula for density?
If you are given density and volume, what is the formula for calculating mass?
If you are given density and mass, what is the formula for calculating volume?
How many significant digits:
11,000
11.0
10,000

3. Density Lab write up is due TOMORROW!
Counts as a quiz grade.
20% - organization of data collected into charts
All numbers have units
All columns and/or rows have names
20% – completion of measurements & 3 observations for all 4 sections.
60 % – answering analysis questions in COMPLETE SENTENCES!!!

4. Test # 1
You will be able to add 20 points onto your grade if you turn in a piece of paper with all of your mistakes corrected.
If you do not correct every mistake, you get zip, zero, nada!
If you come to coach class, I will take a look at your corrections.
Due Monday October 9th, 2006

5. Lab safety quiz
Review & re-take if you did not get 90% or better

6. One more Sig Fig rule:
When you are dividing or multiplying two numbers, your answer should be rounded to same # of sig figs as the least precise number (the # with the least sig figs).