1. Elements and the Periodic Table
Periodic Trends

2. Periodic Trends are repeating patterns
result from organizing elements by their increasing atomic number
are linked to the way in which electrons occupy and fill energy levels
across a period
down a group

3. Jigsaw Activity
There are several properties of the elements in the periodic table that vary in observable patterns.
In this jigsaw activity you will learn about trends in the following:
Atomic Size (Radius) (p 31-34)
Ionization Energy (p 34-35)
Electron Affinity (p 35-36)
Electronegativity (p 36-37)

4. Jigsaw Activity In groups of 4…
Each person completes summary notes and a short lesson on their section (15 min). Use the suggested questions provided by your teacher as a guideline for your lesson.
Each person presents to the group
Each group member takes notes, listens to other member’s presentations
Each person should have complete summary notes on each section

5. Homework Read p31-40 Do p34 #16, 17 p40 #9, 11, 13
Also – Pre-Lab questions
Reminder: Flame Test Lab Write-up is due Friday (attach original prediction)