2nd Quarter Reviewer: Lewis structure and Molecular Geometry

Lewis Structures and VSEPR 

(Answers below)

For each of the following molecules, draw the Lewis structure, indicate the molecular shapes and bond angles. 

Hint – in this worksheet, as in all chemistry problems you’ll see, polyatomic ions aren’t drawn as big lines of atoms.

source: http://misterguch.brinkster.net/ioniccovalentworksheets.html

1)         carbon tetrafluoride                                                                
2)         BF₃

3)         NF₃                                                                                          
4)         H₂CS

5)         carbonate ion                                                                       
6)         CH₂F₂

7)         nitrate ion                                                                                
8)         O₂

9)         PF₃                                                                                          
10)      H₂S

Answers:

Ateneo goes GREEN

A big THANK YOU to all students, teachers, staff and to whole Ateneo community for participating in the Ecological Solid Waste Management  program. Let us make ESWM our springboard to go greener and become the inspiration of many. So Eco-warriors, spread the word...BLUE is the new GREEN.

Keep up the good work guys!

CHEMISTRY ASSIGNMENT: Chemical Bonding

One-day school week?! For real?! Just in case you don't have anything planned for the 5-day weekend extravaganza... here's an assignment for you students out there. You can answer this while snorkeling, scuba diving, or when your lounging by the pool. This assignment will make playing DOTA even fun-er (haha!).

CHEMISTRY ASSIGNMENT: CHEMICAL BONDING

Answer the following in your notebook.

K I                          How many valence electron/s are there in potassium? How about in iodine? Which of the two atoms above will tend to lose electron/s? Gain electron/s? Draw the Lewis-dot diagram that illustrates the transfer of electrons. How many atoms of each element are needed to satisfy the octet rule?	Ca Cl How many valence electron/s are there in calcium? How about in chlorine? Which of the two atoms above will tend to lose electron/s? Gain electron/s? Draw the Lewis-dot diagram that illustrates the transfer of electrons. How many atoms of each element are needed to satisfy the octet rule?
Al Cl                          How many valence electron/s are there in aluminum? How about in chlorine? Which of the two atoms above will tend to lose electron/s? Gain electron/s? Draw the Lewis-dot diagram that illustrates the transfer of electrons. How many atoms of each element are needed to satisfy the octet rule?	Mg O How many valence electron/s are there in magnesium? How about in oxygen? Which of the two atoms above will tend to lose electron/s? Gain electron/s? Draw the Lewis-dot diagram that illustrates the transfer of electrons. How many atoms of each element are needed to satisfy the octet rule?
JOURNAL ENTRY #2: The world is composed of a variety of materials, from the simplest products we use at home to the most complicated ones that has the capacity to destroy the human race. These are all made possible by the interaction of very small particles called electrons. If you have the capability of mixing or combing atoms to form a very unique product, what product would you like to form? Why? (minimum of 100 words)	JOURNAL ENTRY #3: From the atomic level to the highest level of organization in the universe, God created everything in proper balance. Once this balance is disrupted, nature follows its course to correct this imbalance and stability will once again be established. Looking at the present situation of our environment, when most of human activities are destructive, how can you help bring back the stability of our environment? Does the school’s ESWM project make sense? How can you show your support to this project? (minimum of 100 words)

Marware Eco Runner Arm Wrist Band iPod nano 2G 4G 5G

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ELEMENT REPORT: Instructions, Rubrics, Tips, etc.

ELEMENT REPORT

GOAL: Each group should prepare a PowerPoint presentation of the elements assigned to them.

ROLE: Report as if you discovered these elements. Try to be enthusiastic, dynamic, fun… and most of all you should know these elements and their properties like the back of your hand.

AUDIENCE: Your classmates and your chemistry teacher! We easily get bored so hopefully your presentation is… how do you say “NOT BORING” in English? Ha ha ha.

SITUATION: Here’s the situation… your report better be good since this will be our only discussion for CHAPTER 6. Long test for Chapter 6 will be on Wednesday (September 14, 2011). Next week. Hurray!

PRODUCT: PowerPoint presentation and a 5-minute group report.

STANDARDS:

PowerPoint Presentation Rubrics

CATEGORY	5 POINTS	4 POINTS	3 POINTS	2 POINTS
SLIDE BACKGROUND	Background does not detract from text or other graphics. Choice of background is appropriate for the topic.			Background makes it difficult to read the text or see other images on the page.
ORIGINALITY	Presentation shows considerable originality and inventiveness. The content and ideas are presented in a unique and interesting way.			Presentation is a re-hash of other people’s ideas and shows very little attempt at original thought. (Meaning: Almost a copy-paste work)
CONTENT ACCURACY	All content throughout the presentation is accurate. There are no factual errors.			Content is typically confusing or contains more than one error.
SEQUENCING OF INFORMATION	Information is organized in a clear, logical way.			There is no clear plan for the organization of information.
TEXT-FONT CHOICE	Font formats have been carefully planned to enhance readability and content.			Font formatting makes it very difficult to read the material presented.
GRAPHICS	All graphics are attractive and support the theme/content of the presentation.			Several graphics detract from the content of the presentation.
EFFECTIVENESS	Project includes all materials needed to gain a comfortable understanding of the topic. It is a highly effective study guide.			Project is lacking several key elements and has inaccuracies that make it a poor study guide.
DOCUMENTATION	You have properly documented 4 or more good sources for your topic.			You have not properly documented the sources for your topic and the sources are too few or inappropriate.

Group Reporting Rubrics

Rating:

1- WEAK         

2- MODERATELY WEAK          

3- AVERAGE               

4- MODERATELY STRONG      

5- STRONG

1. Presentation is well organized and cohesive
2. The presenter is prepared for the presentation
3. The presentation indicates an understanding of the topic presented  
4. The presenter employs a speaking and delivery style appropriate for the presentation
5. The presenter delivers ideas in a clear and concise fashion, without too much reliance on notes
6. The presenter speaks loudly and clearly enough to be heard by the audience
7. The presenter maintains eye contact with the audience
8. Overall, the work represents the presenter’s full potential

Group Assignment (Laboratory Group)

Group 1	Alkali Metals
Group 2	Alkaline Earth Metals
Group 3	Boron and Carbon Group
Group 4	Nitrogen and Oxygen Group
Group 5	Halogens
Group 6	Noble Gases
Group 7	Early Transition Metals
Group 8	Late Transition Metals
Group 9	Lanthanide Series
Group 10	Actinide Series

Instructions:

1. Choose seven (7) elements from the groups assigned.
2. Come-up with a catchy title for your report.
3. Showcase the following information about each element:
1. Name
2. Symbol
3. Atomic Number
4. Atomic Mass
5. Electron Configuration
6. Origin of Name
7. Properties and Uses
8. Primary source of the element
9. Picture
4. Reporting will be on MONDAY (September 12, 2010).
5. Work hard as a team and have fun!

 

SCHEDULE

THURSDAY			FRIDAY
1st period	CANISIUS PowerPoint presentation making @ IT lab 412	Mr. Torrilla	1ST period	CANISIUS PowerPoint presentation making @ IT lab 412	Mr. Magno
3rd period	BELLARMINE (long test)		3rd period	BELLARMINE PowerPoint presentation making @ IT lab 412	Mr. Inting
5th period	BELLARMINE PowerPoint presentation making @ IT lab 412	Mr. Torrilla	6th period	JOGUES PowerPoint presentation making @ IT lab 412	Mr. Magno
6th period	JOGUES PowerPoint presentation making @ IT lab 412	Mr. Inting

Scope and Sequence for 2nd Quarter 2011-2012

UNIT 2: STRUCTURE OF MATTER

Content Standard:

The learner demonstrates understanding on the structure of matter.

                 

Performance Standard:

 Learners, perform in groups, advocate the importance of materials properties on different products.

  Performance Task:

Poster Board Presentation on the  influence of material properties on product

  Topics:

Quantum Mechanical Model

Quantum Numbers

Electron Configuration

UNIT 3: PERIODIC BEHAVIOR OF ELEMENTS

Content Standard:

The learners demonstrate understanding of the periodicity of the physical and chemical properties of elements and relate it to its atomic structure.

                 

Performance Standard:

 Learners, working individually, manifest understanding on the different properties and uses of elements in everyday life.

  Performance Task:

Web Design showing group of elements with their corresponding properties and uses.

  Topics:

The Development of the Periodic Table and The Periodic Law

Arrangement of the Elements in the Periodic Table:

Quantun Numbers, Electron Configuration and Periodic Table

Periodic Trends: Atomic Size and Ionic Size

Ionization Energy / Electron Affinity / Electronegativity

Enrichment on Periodic Arrangement and Trends

Uses of Elements

UNIT 4: BONDING AND MOLECULAR STRUCTURE

Content Standard:

            The learners demonstrate understanding on chemical bonding and molecular structure.

 

Performance Standard:

 Learners, working in groups, integrate their understanding on chemical bonding and molecular structure to find 

 solutions in the different changes around us.

  Mini-Performance Task:

Laboratory Investigation:      Writing procedures on how to change one substance into another substance.

  Topics:

Ionic Bonding: Octet Rule and Electron Dot Structure

Ionic Bond Formation / Types of Ions / Binary Ionic Compounds

Naming and Writing Ionic Compounds

Formation of Covalent Bond

Properties of Covalent Bonds: Electronegativity, Polar and Nonpolar

Naming and Writing  Covalent Compounds

Enrichment on Naming and Writing Ionic and Covalent Compounds

Properties of Ionic and Covalent Compounds

VSEPR/Molecular Geometry: Determining Geometry of Molecules

Lewis Structure, Formal Charge, VSEPR Theory

Hybridization and Hybrid Orbitals

Polarity of Molecules: Intermolecular Forces of Attraction

Molecular Models

UNIT 5: CONSERVATION OF MATTER AND STOICHIOMETRY

Content Standard:

              The learners demonstrate understanding on the conservation of matter and stoichiometry.

Performance Standard:

 Learners, perform in groups, conduct scientific investigation on predicting and verifying products using scientific method.

  Mini-Performance Task:

Laboratory Investigation: Predicting and Verifying Products

  Topics:

Nature of Chemical Reactions

Classifying Chemical Reactions

Balancing Chemical Equations

Completing Chemical Reactions

                                      

Textbook:

Chemistry, Connection To Our Changing World by Le May , et al, Prentice Hall

References:

1.       Chemistry by Wilbraham, Staley, Matta and Walterman, Prentice Hall

2.       Chemistry "O" Level by JGR Brigss

3.       Fun in Teaching Chemistry by JICA-JOVC and RSTC

4.       Science Chemistry Concepts and Application, Glencoe

5.       Chemistry, A Modular Approach by Padolina,C SOURCE: http://ils.addu.edu.ph/SCI/scopeseq3.htm

2nd Quarter Topic Outline

Hello chem lovers! Second quarter is coming and there's no stopping it. Get your battered heavily chemistry books ready and mark the topics below:

1. Quantum mechanical model of the atom.

2. Electron configuration

3. The periodic table

4. Periodic trends

5. Bonding

6. Naming of compounds

7. Lewis structure

8. VSEPR 

9. Chemical reactions

A detailed topic outline will be posted on the Ateneo de Davao High School website... better check it out.