1. EOC review 2013
Lesson - Periodicity
•The Hot Minute (No
excuses!!!)
•Warm up
•Pre-assessment 4 corners
•Notes with video(?)
•Activity for more practice
•Practice questions
•Exit Pass

2. The Hot Minute (No Excuses!!!)
Write the word “increases” or
“decreases” to describe the trend
from left to right across the period
and from top to bottom, down the
group.

3. The Hot Minute (No Excuses!!!)
KEY
Electronegative
increases across the
period.
Ionization energy
increases across the
period.
Atomic radius decreases
across the period
Electronegativity
decreases down the
group.
Ionization energy
decreases down the
group.
Atomic radius increases
down the group.

4. Warm up
Why do the atomic radii of elements increase as we
move down a group?
a) The force of attraction of the protons on the valence
electron increases.
b) Energy levels are added, increasing the distance
between the nucleus and the valence electrons.
c) Atomic number of the elements increase, increasing
the number of valence electrons.

5. 4 corners activity
The periodic table can be used to identify and
explain chemical families and periodic trends
Dirt road- I know some things about the periodic table
Paved road- I know what the underlined terms are.
Highway- I know the underlined terms and how to
identify families and groups on the periodic table
Autobahn- I know about periods and groups, I can give
examples on the periodic table of groups and trends.

6. Mini
Lesson
video1 :
http://education-
portal.com/academy/lesson/the-
periodic-table-properties-of-
groups-and-periods.html
Start at 1:38 Main
Groups Elements
Video 2:
http://education-
portal.com/academy/lesson/ionizati
on-energy-trends-among-groups-
and-periods-of-the-periodic-
table.html
start at 3:13 and stop at
6:06
Optional:
CU-Lesson Quizzes
Notes Reflection
Periodic Trends and Explain, in your own words, why does each
Properties of Period Families property follow the certain trend?
Using arrows show the following trends,
across a period ( left to right ) and down a group ( top to bottom)
Atomic radius .
Ionic radius
 Metals
 Non metals
Electronegativity
Ionization energy
Reactivity
 Metals
 Non metals
Locate and mark the following families on the periodic table
Alkali metals (IA)
Alkali Erath metals (2A)
Halogens (7A)
Noble gasses (8A)
Transition metals (3-12B)
Locate and mark the location of the following elements List the properties of the families on the
Fluorine Periodic Table and explain why is it important
Francium to know the properties of different groups of
elements in the Periodic Table.
Questions I have or Things I need to remember

7. Checking for understanding
Which of the following trends is shown?
Atomic radius
Ionic radius
Electronegativity
Ionization energy
Reactivity

8. Decreasing for metals
Reactivity

9. Increasing in the direction of the arrow.
It is the highest for noble gas
Ionization Energy

10. Decreasing in the direction of the arrow
Atomic Radius

11. Ionic
radius
Al+3 < Cl -1
K > K+1
S < S-2
Cation < atom
Anion > atom

12. Increases in the direction of the arrow
Fluorine has the highest.
Noble gases have the lowest.
Electronegativity

13. Activity
Part I-5min
Arrange the Periodic Table Cards in a logical
order on the metal sheet creating a Periodic
Table of the Elements.
Using the information on the cards, place the
Periodic Trends Arrows around the Periodic
Table, showing the directions of increase in
each trend
Answer questions 1-4

14. Activity
Part II-5min
Place the Periodic Table Labels for alkali metals,
alkaline earth metals, transition
metals, halogens and noble gases onto the
Periodic Table of Elements.
Answer questions 1-3

15. The end!
Questions
Answer first #’s 17-21
Exit Pass