Warm-Up 10/29/14
Checking 5 minutes after the bell.
1) Answer in notebook: Use the information provided to find the average atomic mass of rubidium.
Round answer to three decimal places.

Objective 10/29/14
Practice calculating average atomic mass.
Agenda 10/29/14
Warm-Up
Recap Average Atomic Mass
Comic Strip Peer Review

Warm-Up 10/28/14
1) Answer in notebook: Use the information provided to find the average atomic mass of rubidium. Round to three decimal places.
Checking 5 minutes after the bell.

Recap Average Atomic Mass
Calculated using the mass (amu) and relative abundance of known isotopes of the element.

Average Atomic Mass
1) Percent Abundance  Relative
Abundance by dividing by 100 or moving decimal place two to the left.
2) Relative Mass = Relative Abundance x
Mass of Isotope
3) Average Atomic Mass = Sum of Relative
Masses

Independent Work Time
Average Atomic Mass worksheet
20 minutes

Comic Strip Peer Review
1) Share your comic strip with at least five other people.
2) Have that person fill out the peer review sheet for you.
3) Warm Feedback – good things about the project. 
4) Cool feedback – Confusions, suggestions, questions.

End of Class…
Turning in three things:
1) Comic Strip Rubric
2) Comic Strip
3) Comic Strip Peer
Review
If you didn’t already, Candium Lab

Homework
Finish Average Atomic Mass worksheet.
Upcoming…
Test Next Monday, 11/3/14
Study Guide