Agenda: Homework: Assignment Sheet

Agenda: Homework:Assignment Sheet

New Unit: Periodic Table as a Tool

Introduction Electron Arrangement impacts PT’s ShapeMetal vs. Non-metals (Properties)Element Groups

Element Song

• http://www.edu-cyberpg.com/IEC/elementsong.html

• Educational CyberPlayGround ®: K-12 Interdisciplinary Curriculum

Agenda –

• Warm-up: Element Song• Determining Electron Arrangement – PT• Periodic Trends

– Atomic Radius– Ionic Radius– Ionization Energy – Electronegativity

Homework:Complete the trendsInformation using text.pp.163-169

Warm -upG 1 G 2 G 16 G 17

V. e V. e V. e V. e

Li Be O F

Na Mg S Cl

K Ca Se Br

Rb Sr Te I

The Pattern is the Key • Put the following into a

pattern– 3 across – 4 down

• Bluebird, green hummingbird, red cardinal, pink flamingo

• Pink freight truck, Red pick-up truck, green Civic, Blue SUV

• Green cottage, Blue house, Red brick apartment building, Dilworth’s pink glass building

Periodic Table

Link between Electron Arrangement & Periodic Table

A Chemist’s Most Useful Tool

Periodic Table

• http://ed.ted.com/lessons/the-genius-of-mendeleev-s-periodic-table-lou-serico

• Also see Review & Dig Deeper on webpage

A chemist’s most useful tool• Why do you think the Periodic Table is

called the “chemist’s most useful tool”?

• Wouldn’t it be great if you could get most of your test answers from the Periodic Table!

• What information do you know how to get?• What information would you (or a scientist)

would like to get?

How can we use the Periodic Tableto understand the properties of elements?

Electron Arrangement impacts the shape of the Periodic Table

• Periods • Groups • Blocks

Unit 4: Periodic Table (student notes)

1. Periodic means: 2. Knowing the __________ __________ in

the Periodic Table, we can predict for an element:

- How easily it will react, - How it will form a compound, - The type of compound it will form, - The number of atoms of each element in a compound

Student notes

The elements in the Periodic Table are arranged across the table according to their_____________ ______________. It identifies the _______________.

A scientist who was important in the development of the Periodic Table is (was) _____________________

a. Elements are arranged in Periods (_____) according to the total number of _________ _________ for their electrons.

b. The Periodic Table can be divided into 4 blocks based on electron configurations for the elements. Groups Val electrons

Block SBlock PBlock DBlock F

Electron Arrangement impacts the shape of the Periodic Table.

1 18

2 13 14 15 16 17

3 4 5 6 7 8 9 10 11 12

Valence e-

Electron dot

Periods

Representative elements are elements in groups 1 & 2; 13-18. These valence electrons are in the _____ and _____ & ________ sublevels.

S, P, D, F Blocks

Periods 18

Understanding of Metals vs. Non-metals

• Examples Metals Non-metals

• Properties– Physical

– Chemical

What do you already know? – Sort terms

Understanding metals vs. non-metalsvideo segment

Understanding Metals vs. Non-metalsPhysical Properties

• Black Study Guide – Metals: p. 47 – Non-metals: p. 50

• Sort terms for metals vs. non-metals

1 18

2 13 14 15 16 17

3 4 5 6 7 8 9 10 11 12

Metals Metalloids Non-metalsBlend of Metal & Non-metalSemi-conductors

Physical& Chemical Properties

Element Groups

• Elements are arranged in groups (____________) according to the number of their ___________ _____________

• Definition:

• Elements in the same group have _________ __________ properties.

Groups: Similar chemical properties

• Video segment

Group Names: describe their properties

Groups important to know:

1 2 Groups 3 - 12 14,15,16,17,18

Hydrogen is unique!

Representative (main group) elements are:

Element Groups & Properties

Name

Alkali Metals

Alkaline Earth MetalsTransition metalsHalogens

Noble Gases

Ion Practice

• Ion Formation base on electron configuration– Metal or non-metal? – Compare atom & ion

• Electron configuration and Electron Dot Notation• Additional practice

– Using Lewis Diagrams

Representing Ions

• Ions are formed when the __________ electrons are lost or gained.

• Metals ________ valence electrons to form

_______ ions, called __________.Non-metals _______ valence electrons until

they have 8 and form _______ ions, called__________.

Comparing atoms & ionsElement Atomic

SymbolElectron Configuration

Circle valence electrons

Electron Dot Diagram

Ion Name Electron Configuration

Electron Dot Diagram

Ionic Symbol

Comparing atoms & ionsElement Atomic

SymbolElectron Configuration

Circle valence electrons

Electron Dot Diagram

Ion Name Electron Configuration

Electron Dot Diagram

Ionic Symbol

Atoms & IonsElement Atom

Lewis structure

Add or lose for 8 val. e-

Ion Lewis structure

Ion

Atoms & IonsElement Atom

Lewis structure

Add or lose for 8 val. e-

Ion Lewis structure

Ion

How do metal atoms lose electrons? Ionization energy

• Ground State, Excited State, Ionization energy

Lithium

How do non-metal atoms gain electrons? Electronegativity

• Large metal atom Small non-metal atom

Forming Compounds• They come together

to form a ______________ ______________ .

• Many formula units are held together to make an _______ compound.

Periodic Trend Animation

• http://faculty.ucc.edu/chemistry-pankuch/Amin.html

• Atomic size• Ionic size• Ionization • Electronegativity

• For later used: bond formation

1 18

2 13 14 15 16 17

3 4 5 6 7 8 9 10 11 12

Trends for Ionization Energy & ElectronegativityArrows to show trends for metals & non-metals

Reactivity: trends for metals and non-metals

6. Octet Rule

Atoms tend to ______, ______, or _______electrons in order to have _____ valence

electrons._______ valence electrons gives stability.

Exception:

Duet rule:

7. Reactivity

Group 18 (called the _______________) are ____________ (also called ________ or _____________), because:

Group 1 (called ____________) are the most reactive metals because:

Group 17 (called ___________) are themost reactive nonmetals because:

1 18

2 13 14 15 16 17

3 4 5 6 7 8 9 10 11 12

Trends for Ionization Energy & ElectronegativityArrows to show trends for metals & non-metals

Reactivity: trends for metals and non-metals

Predicting Properties of Elements- based on the position on the Periodic

Table : Size; IE; EN

Property: which element has the largest value?Ca vs. Br C vs. Sn F vs. I Si vs. ClNa vs. P Li vs. KBe vs. O S vs. ArAl vs. S Ne vs. KrB vs. Al B vs. Ne

Ions and Charges for Representative Elements