1. Lab 1 (in your lab book) and green handout on your desk, please!
Warm-up (Sept 21 and 22)
Give a proper measurement for each:
Lab 1 (in your lab book) and green handout on your desk, please! 32
1.92cm, mL, 16 mL

2. Review!
Classify the following into element, compound or mixture (if it is a mixture, tell if it is hetero or homogeneous):
Orange Juice Lead Nitrate Fanta
Carbon Monoxide Sodium Potassium
Sugar Water Sand Water Bronze

3. Sig Figs WS 4 Key
Rounding is our problem!

4. Sig Figs Last Chance Do Blue Worksheet in your groups!
Challenge problems if you finish early!

5. Lab 1 Examples of Jobs well done!

6. Lab 1 discussion Part 2 research time (15-20 minutes?) Keep in mind:
KEEP TRACK OF YOUR SOURCES! You will need to cite them!
Google doc with your group!
Keep in mind:
It could be an element, compound, or an alloy
They are all common materials
Your densities aren’t perfect, so search a range

7. Two more problems for your notes!=
Now round to 3 sig figs!
4.50 x x =
Now round to 2 sig figs!
22.27 in correct sig figs, 22.3
79.9 in correct sig figs, 80. or 8.0 x 10 ^1

8. Homework Day 7 Quiz on Sig Figs, Elements, and Density next class!
Remember, extra practice WS, videos, and Keys on Moodle if you need more!
Keep researching for Lab 1 answers if you aren’t done!