Elements and the Periodic Elements and the Periodic TableTable

Periodic Trends

Periodic TrendsPeriodic 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

Jigsaw ActivityJigsaw 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)

Jigsaw ActivityJigsaw ActivityIn 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 groupEach group member takes notes,

listens to other member’s presentationsEach person should have complete

summary notes on each section

HomeworkHomework• 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)