September 22, 2oo9

Today in class we had our Chapter 1 Unit Exam!


1. In part one of the exam we had to match the WHMIS symbols with their appropriate labels.
And here they are:






Compressed Gas








Flammable Material

Oxidizing Material

Material Causing Immediate and Serious Toxic Effects

Corrosive Material

Biohazard Infection Material

2. In part two we listed 4 fundamental units of the SI system and their abbreviations.

These units were:

Meter - M

Mole - Mol

Second - S

3. In part three we did fill in the blanks:

When measuring liquid in a chemistry lab first use a graduated cylinder. Most liquids will not form a flat horizontal line but will curve. This curve is called a meniscus. To properly measure the volume of fluid measure to the bottom of the curve. After recording the volume of fluid transfer it to a beaker or test tube.

4. In part four of the exam we had to count how many significant digits were in the following numbers:

1.500m = 4 significant digits

2.0 x 10^-3g = 2 significant digits

0.00202 mL = 3 significant digits

7.01 x 10^4 J = 3 significant digits

Pi = never ending

For the rest of our chapter 1 unit exam we went over unit conversions.