Unit 5 - Ionic Bonding

Home

	Unit 5 - Ionic Bonding

Extra Credit Due - Monday, December 8, 2008 - Hard copy due at beginning of class

Confirm approval of websites for extra credit no later than Friday, December 5 at 3:30 pm

What you have to know:

Reading Assignments

by Nov 17 - Chapter 8 Section 1 and 2 / Part A and B - use reading guide form provided in class and answer chapter questions from the guide

by Nov 19 - Chapter 8 Section 3 / Part C - use reading guide form provided in class and answer chapter questions from the guide

by Dec 1 - Chapter 11 section 4 - Percent composition

by Dec 2 - Chapter 11 section 5 - Hydrates

Prelab preparation for The Ionic Compound ID Lab -

The Ionic Compound ID Lab/Test. This is a 200 point grade

See the links below for the prelab - and other links for the math part of this unit.

Activities and Assignments

Guided Chapter 8 Reading handout

Bonding Video and notes

Ionic Reading and questions handout answers

Ionic Bonding – ionization worksheet

Energy, Stability and Ionic bonding questions

Polyatomic ions reading handout - Ions you need to know

Nomenclature Flow Chart

Naming Ionic Compounds

Unit Test

Ion Bench Test Lab (test grade - click here for prelab)

Monday

Tuesday

Wednesday

Thursday

Friday

November 17

Bonding Video

HW - Finish reading assignment for sections 1&2 if not complete. Re-write your answers to video questions.

A good resource link

Open Note Daily 5

Energy and Compounds

HW: review flashcards and memorize polyatomic ions. Complete reading on Polyatomic Ions and answer questions from Polyatomic Ion worksheet.

Daily 5 on Polyatomic Ions

HW - READ section 8.3 and use guided reading worksheet section C, emphasis on pages 226-227. Finish Ionic Bonding - Ionization and Electron Review Worksheet -parts b and c (check answers with the link above).

Nomenclature - Naming Ionic Compounds

HW: Two worksheets for naming ionic compounds. Both worksheets have 20 questions

Mrs. Barnwell Out

Nomenclature - Naming Ionic Compounds Practice

HW: Follow directions and assignments as instructed by Substitute Teacher.

Daily 5 on Naming Ionic Compoiunds

Writing formulas for Ionic Compounds

HW - For the Holiday Weekend - Practice Naming Ionic Compounds and Writing Formulas.

Also read Chapter 11 - Sect 4

Naming and Formula writing practice

HW - For the Holiday Weekend - Practice Naming Ionic Compounds and Writing Formulas. Be prepared for a Daily 5 when you return.

Read Chapter 11 - Sect 4

Happy

Thanksgivings

Holiday

December 1

Possible Daily 5

Percent composition

HW: Practice calculation worksheets.

Possible Daily 5

Percent composition and hydrates

HW - Study for test

Review and conclude

HW - Study for test

Unit 5 - Ionic Bonding Test

Confirm approval for extra credit no later than Friday at 3:30 pm

Read and prepare for Percent Composition Lab.

Percent composition

Confirm extra credit approval by 3:30 pm

8
Extra Credit Due

Percent composition

Read about hydrates - Chapt 11 section 5

Read and prepare for Hydrates lab

Hydrates Lab

Lab -Write ups due

Preparation for Ion ID Lab

Exam Review

15
Exam Review

16
Exams

17
Exams

18
Exams

19
Exams

Happy Holidays - May God bless each of us with needed rest and fellowship with family and friends to start a new year!

*Website Links*

A study guide for bonding

Looking for new sites

Day 1 - Ionic Bonding and Octet Rule - Notes and Information
Use your notes from the first day of the unit and your knowledge of ions and electron configurations to answer the following.
Salts are compounds made of ions. One ion is almost always a metal. Which has the larger size, a sodium atom or a sodium ion? How does a sodium atom differ from a sodium ion? How are the sodium atom and sodium ions alike? What is significant about the electron configuration of the sodium ion? Now lets look at chlorine... How many electrons are in the highest energy level? How does this electron configuration relate to that of a noble gas? How can chlorine gain stability? What charge would an anion of chlorine have? How many protons are in an ion chlorine? How does the size of chlorine atom compare to the size of its ion? Now lets make it salt by sending the lone 3s electron from sodium on its way. It is easily joined to chlorine to compete its outer p orbital. Note: When we get to the d orbitals, this is not always the case (complete s and p), but you have seen the most reactive elements are from the main block of the periodic table and the OCTET rule does hold for these s and p electrons from those elements. Octet Rule: main block elements form bonds by giving or accepting electrons so that each atom has as full s (2electrons) and p (6 electrons) sublevel in the outermost energy level. With a sodium cation and a chlorine anion, the opposite charges create an attraction, just as do magnets and other charged particles. The force of attraction between oppositly charged ions is an ionic bond. In most ionic compounds this attraction is between more than a pair of particles- it involves many, creating a crystalin shape. In the crystal of NaCl, the force of attraction is 1.7 times stronger than for just two ions alone because each sodium ion has room to attract six chloride ions, and vice versa. All salts have an ordered packing arrangement that differs based on ion size and forces of attraction – that’s the CRYSTAL. Because there is the extra strength due not only to the bond but from the crystal structures as well salts have some unique properties. Ionic compounds have high melting and boiling points. Some even decompose (break apart taking back their electrons) before boiling. Salts are hard and brittle. What do brittle substances do when broken apart?

Day 1 - Ionic Bonding and Octet Rule - Notes and Information

Use your notes from the first day of the unit and your knowledge of ions and electron configurations to answer the following.

Salts are compounds made of ions. One ion is almost always a metal.

Which has the larger size, a sodium atom or a sodium ion?

How does a sodium atom differ from a sodium ion?

How are the sodium atom and sodium ions alike?

What is significant about the electron configuration of the sodium ion?

Now lets look at chlorine...

How many electrons are in the highest energy level?

How does this electron configuration relate to that of a noble gas?

How can chlorine gain stability?

What charge would an anion of chlorine have?

How many protons are in an ion chlorine?

How does the size of chlorine atom compare to the size of its ion?

Now lets make it salt by sending the lone 3s electron from sodium on its way. It is easily joined to chlorine to compete its outer p orbital.

Note: When we get to the d orbitals, this is not always the case (complete s and p), but you have seen the most reactive elements are from the main block of the periodic table and the OCTET rule does hold for these s and p electrons from those elements.

Octet Rule: main block elements form bonds by giving or accepting electrons so that each atom has as full s (2electrons) and p (6 electrons) sublevel in the outermost energy level.

With a sodium cation and a chlorine anion, the opposite charges create an attraction, just as do magnets and other charged particles.

The force of attraction between oppositly charged ions is an ionic bond.

In most ionic compounds this attraction is between more than a pair of particles- it involves many, creating a crystalin shape. In the crystal of NaCl, the force of attraction is 1.7 times stronger than for just two ions alone because each sodium ion has room to attract six chloride ions, and vice versa.

All salts have an ordered packing arrangement that differs based on ion size and forces of attraction – that’s the CRYSTAL.

Because there is the extra strength due not only to the bond but from the crystal structures as well salts have some unique properties.

Ionic compounds have high melting and boiling points.
Some even decompose (break apart taking back their electrons) before boiling.
Salts are hard and brittle.

What do brittle substances do when broken apart?

Homework
Reading handout and questions, along with remaining questions from class worksheet. Worksheet answers may be posted - if not posted, will be passed out in class

Homework

Reading handout and questions, along with remaining questions from class worksheet.

Worksheet answers may be posted - if not posted, will be passed out in class

*Video and Reading*

Please pay close attention to the video as it give great graphic illustration to the concepts discussed in class, along with more information.

Your guided reading handout is very informative and should be a great source for understanding of concepts we will cover in this unit.

Please read, highlight, take notes on that reading. From the video - what should your learn? You will need to take notes on the following topics and questions:

What are three types of bonding?
Name at least four properties of ionic compounds.
Be able to explain why ionic compounds have the properties you listed above in terms of compound structure.
What type of elements do you expect to find in ionic compounds?

*Energy*
You can expect a 5-10 question daily quiz on material from Day 1, the video, the reading handout and the text reading. Then we will look at energy related to ionic bonding via a power point and some questions. Great general information http://www.chemfiesta.com/ You will have to navigate the site click on Mr. Guch Explains, then Ionic compounds. A good resource link In your notes your should find: What is stability? What is lattice energy? How do other energies play a role in ionic bonding (IE, AE, vaporization and others)? How to read a Born Haber Diagram.

Energy

You can expect a 5-10 question daily quiz on material from Day 1, the video, the reading handout and the text reading.

Then we will look at energy related to ionic bonding via a power point and some questions.

Great general information http://www.chemfiesta.com/

You will have to navigate the site

click on Mr. Guch Explains, then Ionic compounds.

A good resource link

In your notes your should find:

What is stability?
What is lattice energy?
How do other energies play a role in ionic bonding (IE, AE, vaporization and others)?
How to read a Born Haber Diagram.

Polyatomic Ions

Please see the class handout and have your flash cards ready	List of polyatomic ions to learn
Try this site to learn more about them

Nomenclature
We will begin learning how to name ionic compounds and write formulas from names. If you have not learned the symbols and polyatomic formulas, don't expect to be able to learn this skill. If you do know these - this should be pretty easy with practice! :-)

Nomenclature

We will begin learning how to name ionic compounds and write formulas from names.

If you have not learned the symbols and polyatomic formulas, don't expect to be able to learn this skill. If you do know these

- this should be pretty easy with practice! :-)

Try this quiz	http://www.glencoe.com/qe/science.php?qi=523

*Percent composition*

Look at these example problems and try the extra practice - answers provided	http://homepages.stuy.edu/~bucherd/ch6/percentcomp
This site has you calculate and check your answer on line, but no examples	http://science.widener.edu/svb/tutorial/percentcompcsn7.html
Working backwards - use the percent composition information to determine emperical formulas	http://science.widener.edu/svb/tutorial/empiricalformulascsn7.html

*Compound ID lab test*

Home