EOC review 2013Lesson - Periodicity

•The Hot Minute (No excuses!!!)

•Warm up

•Pre-assessment 4 corners

•Notes with video(?)

•Activity for more practice

•Practice questions

•Exit Pass

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.

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.

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.

4 corners activityThe periodic table can be used to identify and explain chemical families and periodic trends

Dirt road- I know some things about the periodic tablePaved road- I know what the underlined terms are. Highway- I know the underlined terms and how to identify families and groups on the periodic tableAutobahn- I know about periods and groups, I can give examples on the periodic table of groups and trends.

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/ionization-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

Checking for understandingWhich of the following trends is shown?

Atomic radius Ionic radius ElectronegativityIonization energy Reactivity

Decreasing for metals

Reactivity

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

Ionization Energy

Decreasing in the direction of the arrow

Atomic Radius

Ionic radius

Al+3 < Cl -1

K > K+1

S < S-2

Cation < atom

Anion > atom

Increases in the direction of the arrow Fluorine has the highest.

Noble gases have the lowest.

Electronegativity

ActivityPart 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 trendAnswer questions 1-4

Activity Part II-5min

Place the Periodic Table Labels for alkali metals, alkaline earth metals, transitionmetals, halogens and noble gases onto the Periodic Table of Elements.Answer questions 1-3

The end!

QuestionsAnswer first #’s 17-21

Exit Pass