11/28/2011 Standards: 2Objectives:a. Be able to describe formation of ionic bonds b. Review for Quiz 2.3 (Ch 8 + Density - 2 problems)c. Be able to name and figure relative lattice energies for ionic cmpds DO NOW: 1. Write the correct chemical formula for the ionic compounds formed by each

of these pairs of elements: Al & P(3-); Ca & Br; Fr & 52Te HOMEWORK: 1. Ch 8 Ch Assess, p. 236 47-59 (leave out 56 & 58) - copy questions, given your best answer & reason for the answer. Answers will be on-line this evening.

(5 pts) 2. Create Help Sheet for Quiz 2.3 (Ch 8 + 2 density probs) (5 pts) 3. Don't forget the ChemThink.com assignment, due tonight (10 pts)===========================================================STAMPS: Ex Cr for card decs for Mem Ions 2 (11 total now)

ANNOUNCEMENT: My son Jacob and I, will be singing at the Variety Show – Fri 12/9 (next week)

On-Line app for iPhones: "EMD PTE" is a free app that gives you a nice, interactive, PERIODIC TABLE. It may also be available for Droids, but I'm not sure.

RESPONDERS

Answers to today's DO NOW

More announcements for this week:

Wed - Quiz 2.3 - Ch 8 (70%) and all the other chapters(30%) we have covered this yr (60 pts)

Th - Memorize Ions - 2 - See "Quiz/Test Reviews" on mywebsite for details (10 pts)

Fri - Standard 1 CFA Quiz (10 pts)

1. Demo 2 Mg + O2 ---> 2 MgO

2. vid V +5 +4 +3 +2 change color vid.mpg - V forming different oxidation states with different colors from

Interactive Chalkboard - Ch 6 (Periodic Table)

3. Use 2 quizzes: Naming Ionic Cmpds & Lattice Energy - included in this file,

following this page

Following are 2 gradable quizzes:

1. Naming Ionic Cmpds (4 q's)

2. Lattice Energy (5 q's)

Naming Ionic Cmpds - responder quiz

Grade:«grade»

Subject:Name Ionic cmpd - responder quiz

Date:«date»

1 What is the correct formula for Barium phosphide ?

A BaPB Ba3P2

C Ba2P3

D BaP3

f

2 What is the correct formula for Magnesium bromide ?

A MgBr

B Mg2Br

C Mg2Br2

D MgBr2

3 What is the correct formula for calcium carbonate?

A CCO3

B C2CO3

C CaCO3

D Ca2CO3

4 How would you name this ionic compound? NH4C2H3O2

A nitrile acid

B acetate of ammonia

C ammonia acetate

D ammonium acetate

Lattice Energies - Notes for understanding

Smaller ions ===> larger negative value for lattice energy (meaning more lattice

energy)

Larger ions ===> smaller lattice energy (meaning smaller negative value for lattice

energy)

Charge of ion - larger charge (+ or -) ====> more

lattice energy

Lattice Energy

Grade:«grade»

Subject:4 q's on LE

Date:«date»

1 Answer?

A

B

C

D

Formula of cmpd

cation relative strength

anion relative strength

Total relative strength

MgCl2 Mg2+ Cl1- 3 AlCl3 Al3+ Cl1- 4 NaCl Na1+ Cl1- 2 LiCl Li1+ Cl1- 2

Explanations given below

2 Answer?

A

B

C

D

Explanation given below

Formula of cmpd

cation relative strength

anion relative strength

Total relative strength

BP B3+ P3- 6 Al2O3 Al3+ O2- 5 MgO Mg2+ O2- 4 B2O3 B3+ O2- 5

3 Answer?A

B

C

D

Explanations given below

total relative strength

formula ofcompound

MgO

SrCl2

LiF

AgCl

cation relativestrength

anion relativestrength

We don't need to check the sizes of the anions, because there are no ties for largest charge total

4 Answer?

A

B

C

D

Explanation given below

Formula of cmpd

cation relative strength

anion relative strength

Total relative strength

LiF Li1+ F1- 2 LiBr Li1+ Br+ 2 LiI Li1+ I1- 2 LiCl Li1+ Cl1- 2

So the decision goes to the relative size of the anion!

5 Which of the following is more important in deciding the relative lattice energy of a compound?

A Size of the ions?B Charge total of the aions?

This quiz should only count for 4 questions, question 5 had problems to begin with and period 5 didn't have time to answer

11/29/2011 Standards: 2 (Chemical Bonds) Objectives:a. Review any HW not reviewed yesterday.b. Review for Quiz 2.3 (Ch 8 + Density - 2 problems) DO NOW: 1. Come up with 5 problems you need help with from HW given on Ch 8 2. If density = 3.2 g/mL and volume = 22.1 mL, what is mass?HOMEWORK: 1. Quiz 2.3 On-Line Practice Quiz. Copy question or summarize question, give correct answer, and reason for your answer, wich may include a page# (10 pts) Std: MISC 2. Brush up your Help Sheet for tomorrow's Quiz 2.3 (Ch 8 + Density)=========================================================STAMPS: Journal 11/28 1. Ch 8 Ch Assess, p. 236 47-59 (leave out 56 & 58) (5 pts) Std MISC 2. Help Sheet Quiz 2.3 (5 pts)

On-Line ChemThink – Ionic Bonding Tutorial and Quiz Questions (10 pts) is due today.

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Young ladies - dressing immodestly (skin showing insuggestive places) attracts boys to only one thing

Young Men - you too! If all you want is surfacerelationships that mean nothing, what will marriedlife be like for you? Remember there is other stuffyou need to know about young women!

Suggestive dress contributes to porn problem which is an addiction!!!!

3 minutes

Review of Ch 8 (Quiz 2.3)

1. Electron Affinity

2. Molecules are electrically neutral (total (+)'s = total (-)'s)

3. Properties of ionic solids - strongly affected by LE (lattice energy)melting point vs LE (directly proportional)boiling point vs LE (directly proportional)hardness vs LE (directly proportional

4. Ionic Bonds are strongest of all bonds

5. Chemical formula of ionic bonds

Electronegativity - ability of an atom in a molecule to attract the bonding electrons.

Ionization Energy - energy required to remove electrons from the valence shell of an atom.

Electron Affinity - energy given off when an electron is accepted by a non-metal.

All have the same trend

Use lesson plan for 11/18 - alloys, lattice structures (substitutional & interstitial)

http://michele.usc.edu/105a/crystal/example.html

3-D Crystal lattice

11/30/2011 Standards: Many Objectives:a. Check for understanding with Quiz 2.3 - Ch 8.1-8.4 + density DO NOW: 1. Clear desks and floor, all materials to side or back counters.

Desks: scantron, help sheet, pencil, eraser, calculators, scratch paper HOMEWORK:1. SN Ch 9.1 p. 107-110 (5 pts) Std 22. ChemThink - Covalent Bonding Tutorial (3 pts) and Questions (7 pts) Std 2===========================================================STAMPS:

NONE

BASKET:Quiz 2.3 On-Line Practice Quiz (5 pts) Std MISC

Copy the HW from my website

Due tomorrow Due Tu next wk

Students doing arranging:

1. put in 5 piles Help Sheetscratch paperQuizzesScantronsPeriodic Charts

2. Arrange Periodic Charts - smallest #'s on top

` Tests - smallest #'s on opScantrons - smallest #'s on top

3. Fan tests so all #'s can be seen

12/1/2011 Standards: 2 (Chemical Bonding)Objectives:a. Check for understanding: Mem Ions 2 (11 ions) b. Be able to understand questions from SN Ch 9.1 c. Prep for Standards Quiz for Std 1 DO NOW: 1. Review for quiz on your own as I stamp. Then, Clear desks,

floor, etc - everything on side counters for HOMEWORK: 1. Page 244 PP's 1-5 (5 pts) Std 2

(re-watch video on Covalent Bonding - "Lewis Structures ofcovalent Molecules for beginners - Part 1" as shown in class today

2. Structure of the Atom - Std 1 Quiz tomorrow (20 pts) ======================================================STAMPS: Journal 11/29 (day before Quiz 2.3)1. SN Ch 9.1 p. 107-110 (5 pts) Std 2

Lewis Structures of covalent Molecules for beginners - Part 1

formula

Lewis Structure

H H

OH2O

H2

O

Total

Unshared

bonding

Atoms Valence Electrons

A bonding pair of electrons =

Check 2 things to have a correct Lewis Structure1. Every atoms has 8 electrons except H (only needs 2)2. Total electrons in Lewis Structure = total of all valence electrons

from the individual atoms.

Lewis Structures For Covalent Molecules Std 2

Pre-Quiz Review

Grade:«grade»

Subject:Standard 1

Date:«date»

1. The atomic number in the periodic table is lowest in the

A upper left corner

B upper right corner

C lower left corner

D lower right corner

1 Answer?

quadrants of periodic chart

electronegativity

2. The electronegativity of an element indicates the relative ability of its atomsto attract electrons in a chemical bond. Asyou move down a group in the periodictable the atomic number:

A. increases and the electronegativityincreases.

B. increases and electronegativity decreasesC. decreases and the electronegativity increasesD. decreases and the electronegativity decreases

2 Answer?AB C D

3. Which of these elements has the weakest attraction for electrons?

A. Boron ( atomic number = 5)

B. Calcium ( atomic number = 20)

C. Hydrogen ( atomic number = 1)

D. Sulfur ( atomic number = 16)

3 Answer?

A B C D

4. When a lithium atom loses its electrons, how does its density and

weight change?

A. Its density and weight both decrease slightly.

B. Its density decreases significantly, and its weight decreases slightly.

C. Its density and weight both decrease significantly.

D. Its density increases significantly, and its weight decreases slightly.

4 Answer?AB C D

12/2/2011 Standards: Objectives:a. DO NOW: 1. HOMEWORK:1. =========================================================STAMPS: