A: 8 November 2011
Take out your element facebook page Objective: You will be able to:
Review electron configuration, ionization and the valence shell
Describe trends in atomic radius and electronegativity on the periodic table.
Do now: Track your exit ticket (2.10-2.13)With your partner, correct the answers on
your exit ticket.
Agenda
I. Do nowII. Review for quizIII. Unit 3 Objectives!IV. Trends in atomic radius and
electronegativityHomework: Element Facebook Page:
tomorrowUnit 2 Quiz Objectives 2.7-2.13
tomorrow
Quiz Review – in your notebook
1. Draw the orbital notation for oxygen.2. Electrons are represented by ______.3. Each individual box represents ______.4. Write the electron configuration notation
for oxygen.5. Circle the valence shell6. What does the “1” stand for? “s”? “2”?7. How many valence electrons does it have?8. Draw its dot diagram.
9. What do the dots represent?10. How many protons does oxygen have?11. Draw a picture of oxygen that shows
the energy levels. Now, turn it into an ion of oxygen.
12. Write the electron configuration for the oxygen ion.
13. Write the symbol with the charge for the oxygen ion.
Atoms vs. Ions
Venn Diagram
What do Group 1 elements have in common?
http://www.youtube.com/watch?v=GVoJZkmAAfA
If you finish early…
Work on your Element Facebook page
Start on the packet I just left on your desk
Study for a quiz you need to retake Do other work silently
A: 9 November 2011
Take Out Homework: Element facebook page
Objective: You will be able to: show what you know about electron
configuration and ions describe and sketch trends in
electronegativity and atomic radius Do now: What is one thing that atoms
and ions have in common? One difference?
Agenda
I. Do nowII. Objectives 2.7-2.13 QuizIII. Trends on the periodic tableIV. Graphing and analyzing trends:
ExampleV. Finish graphing and analyzing trendsHomework:Graphing and Analyzing Trends:
tomorrow
Quiz
When you finish, silently: Turn it over on your desk. Track your 2.1 to 2.6 quiz that you just got
back. Keep out your tracking sheet for stamps! Stack up all your Unit 2 papers (Quizzes,
Homework, Labs…) and paperclip them together. Put the Unit 2 Mastery Tracking Sheet on Top!
Start the Trends on the Periodic Table worksheet or
Work on other work
Trends on the Periodic Table
Atomic radius increases
Atom
ic radius increases
Atomic Radius (size of the atom)
Atomic radius
As you move down the periodic table, more energy levels are added This increases the size of the atom
As you move left to right across a period, more electrons are added to the SAME energy level There is increasing attraction between
more electrons and the positive nucleus Atom size decreases!
Electronegativity The ability of an atom to attract electrons
to itself. Elements that want to lose electrons
have low electroneg., Elements that want to gain electrons
have high electroneg. Increases going up a group Increases going across a period
The smaller the atom, the easier it can attract other electrons
Most reactive: F Least reactive: Fr
Electronegativity IncreasesEl
ectr
oneg
ativ
ity In
crea
ses
Electronegativity: ability of an atom to attract electrons
Trends on the Periodic Table
With your partner and your periodic table, complete the front, ranking each row in order of increasing atomic radius.
Then, complete one table on the back using the special periodic table
Then, we’ll do one graph and analysis together.
Homework
Trends in atomic radius worksheet (front + 4 graphs, 4 analysis paragraphs): tomorrow
A: 11 November 2011
Take Out Homework: Trends on the Periodic Table Graphing
Objective: You will be able to: differentiate between ionic and
covalent bonding and predict bond type
Do now: Write the symbol for the ion formed by calcium.
Explain how you determined your answer.
Agenda
I. Do now, collect homeworkII. Ionic vs. covalent bonding:
examples, modeling and practice problems
III. Exit TicketHomework: Week 10/11 Homework
#1-12: due Monday
Modeling Bonding
Ionic Bonding To gain or lose electrons, atoms need to
give or take them from other atoms Ionic bond – one atom gives one or more
electrons to another atom The oppositely charged ions are attracted to
one another (electrostatic attraction) this causes them to become bonded
together Ions will transfer electrons (and bond) so
that they both get 8 valence e-
Ionic Compounds
How do you know if a compound is ionic?1. One cation (left/middle of
periodic table) + One anion (right of periodic table or a polyatomic anion)
2. Transfer electrons so that both atoms have a full valence shell.
3. Are bonded by electrostatic attraction.
Color your periodic table
Ionic Bonding
F Li
Cartooning Ionic Bonding On your Week 10/11 Homework packet…
Sodium metal reacts with chlorine gas to form solid sodium chloride
Na+ + Cl- NaCl
Na
Covalent/Molecular Compounds
Two or more elements from the right side
Two or more nonmetals Share electrons to make full
valence shells
Dot Diagrams of Covalent Bonds
Cl2 F2 H2
Modeling Covalent Bonding
Homework
Week 10/11 Homework #1-12: due Monday
A: 15 November 2011
Take Out Homework: Week 10/11 #1-11 Objective: You will be able to:
differentiate between ionic and covalent bonds and write names for ionic compounds.
Do now: An atom of calcium meets an atom of sulfur. Describe what happens and what type of bond they make. (2 complete sentences)
Agenda
Do now/homework check Review ionic vs. covalent bonding Naming ionic compounds: examples
and practice problems Hand back and track quizzes,
celebrate progressHomework: Week 10/11 Homework
#12-13: Weds. Quiz Thurs. Obj. 3.1-3.4
Videos!
• http://www.youtube.com/watch?v=QqjcCvzWwww
• http://www.youtube.com/watch?v=yjge1WdCFPs&feature=PlayList&p=8D43FC9FA07913EF&playnext=1&playnext_from=PL&index=23
Ionic or Covalent? In your notebook, copy each example. Then,
write an “I” for ionic or a “C” for covalent1. NaCl2. NO2
3. N2Br4. NaI5. KNO3
6. CaS7. H2O8. Cl2
9. Cu(OH)2
10. CCl4
Naming ionic compounds
Write the cation name Name of the element
Write the anion name Beginning of element name + -ide
Ex 1: LiCl Ex 2: Al2O3
Practice Naming Ionic Compounds
1. CaF2
2. BeO3. Li2O4. KBr5. Rb2S6. Al2O3
7. SrCl2
8. MgO
Homework
Week 10/11 Homework #12-13: Weds.
Quiz Thurs. Obj. 3.1-3.4
Videos!
• http://www.youtube.com/watch?v=QqjcCvzWwww
• http://www.youtube.com/watch?v=yjge1WdCFPs&feature=PlayList&p=8D43FC9FA07913EF&playnext=1&playnext_from=PL&index=23
Ionic or Covalent? In your notebook, copy each example. Then,
write an “I” for ionic or a “C” for covalent1. NaCl2. NO2
3. N2Br4. NaI5. KNO3
6. CaS7. H2O8. Cl2
9. Cu(OH)2
10. CCl4
A: 16 November 2011
Take Out Homework: Week 10/11 #12-13
Objective: You will be able to write formulas and names for ionic
compounds Do now: Ionic or covalent?
a. CaCl2
b. CO2
c. AlF3
Agenda
I. Do now/homework checkII. Exit ticketIII. Writing formulas for ionic compoundsIV. Practice problemsV. Ionic bonding “speed dating”VI. Formulas for ionic compounds
assignmentHomework: Week 10/11 Homework p. 4Quiz tomorrow (Obj. 3.1-3.4)
Exit Ticket
When you finish, paperclip all your unit 2 materials together and raise your hand.
I’ll give one person at a time permission to put them in your green folder
Writing Formulas for Ionic Compounds
1. Write each ion symbol with the charge2. “Cross” the charges down to the
bottom of the opposite element3. Rewrite symbols with subscripts
1. Do not write + or –, or 1Examples:
Ex 1: aluminum oxideEx 2: lithium sulfideEx 3: magnesium oxide
Writing formulas from names
1. potassium chloride2. magnesium bromide3. rubidium sulfide4. beryllium fluoride5. sodium oxide6. magnesium sulfide7. aluminum oxide8. aluminum iodide
Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.
IONS SPEED DATING
Fill in your 2 ion cards (6 minutes) Mingle with your classmates to make 10 ionic
compounds. Fill in all four columns of the chart. Cation (+) FIRST!
Each correctly named compound will earn you 10 points. Each compound over 10 will earn you bonus points!
Check to be sure you write the CATION first! If you run out of combinations, trade an ion
with a classmate.
Before the end of the period
Stay in your seat and…1. Finish Week 10 HW Page 4 and get it
stamped!2. Be sure your mastery tracking sheet
from Unit 2 is stamped3. Organize your Unit 2 materials and
paper clip them.4. Leave them in your green folder. (One
person up at a time, please)5. Work quietly on other work
Homework
Week 10/11 Homework p. 4: tomorrow
Quiz on 3.1-3.4: tomorrow
A: 17 November 2011
Take Out Homework: Week 10/11 p. 4 Objective: You will be able to:
show what you know about ions, electronegativity, atomic radius, and ionic vs. covalent bonding.
Do now: Find fluorine on the periodic table.a. Write the symbol of the fluoride ion.b. Describe the atomic radius and electronegativity
of fluorine (big/small, high/low)c. What could fluorine bond with to make an ionic
bond?
Agenda
I. Do nowII. QuizIII. Go over homeworkHomework: None!
A: 17 November 2011
Take Out Homework: Week 10 page 4
Objective: You will be able to: write names and formulas for ionic
compounds with transition metals. Do now: Write the formula for the
compound formed by the Fe3+ ion and the ion formed by chlorine.
Agenda
I. Do now/check homeworkII. Ionic compounds with transition
metalsI. names and formulas
III. Practice problemsHomework: Week 10/11 Homework
p. 5: Fri.
Quiz
3.1: Predicting and writing symbols for ions
3.2: Trends for electronegativity and atomic radius
3.3: Ionic vs. covalent bonds 3.4: Predicting from a formula what
kind of bond will form.
Quiz
When you finish the quiz: organize your Unit 2 materials and
paperclip them together you may have already done this
Work silently on other work
A: 18 November 2011
Objective: You will be able to: write names and formulas for ionic
compounds with transition metals and polyatomic ions.
Do now: Write the names of the following
compounds: a. MgCl2
b. K2O
Do now answers
a. magnesium chloride b. potassium oxide
Agenda
I. Do nowII. Ionic compounds with transition metalsIII. Ionic compounds with polyatomic ionsIV. Practice problemsV. Start Homework pages 5-6 Homework: Week 10 Homework pages 5
and 6: due Monday Quiz Tuesday: Writing ionic compound
formulas and names
Patterns on the Periodic Table
So we know that… Group 1 elements make 1+ ions Group 2 elements make 2+ ions Group 13 elements make 3+ ions Group 15 elements make 3- ions Group 16 elements make 2- ions Group 17 elements make 1- ions
What about…
Groups 3 through 12?! What ions do they make?!
If we leave them out, they will be…sad.
Ionic Compounds with Transition Metals
Transition Metals: Groups 3-12 (and the metals in groups 13-15)
Participate in making ionic compounds as cations (+)
Can have different charges Use the Stock System to show
which charge the ion has, using a Roman numeral (1-6: I, II, III, IV, V, VI)
For Example
The iron ion can have a charge of 2+ or 3+ Fe2+ is written as iron (II) (“iron two”) Fe3+ is written as iron (III) (“iron three”)
The tin ion can have a charge of 2+ or 4+ Sn2+ is written as tin(II) Sn4+ is written as tin(IV)
Cr, Mn, Fe, Co, Ni, Cu, Au, Hg, Sn, Pb
Examples: Writing formulas
Ex 1) iron (II) chloride
Ex 2) copper (I) oxide
Ex 3) tin (IV) sulfide
Examples: Writing names
Ex 1) Fe2O3
Ex 2) PbI2
Ex 3) FeO
Practice Problems Write the names or formulas for the
following ionic compounds using the stock system
1. CuI2
2. lead (II) sulfide3. CuBr2
4. iron (II) chloride5. SnO6. lead (IV) bromide7. Sn3P4
8. chromium (III) chloride
So far, each ion has been made of just one atom that has lost or gained electron(s)
Can an ion have more than 1 element? yes!
Polyatomic Ions
Ions made of more than one element Have an overall charge Ex: NO3
−
This is a nitrogen atom, bonded to three oxygen atoms
The whole thing has a charge of 1-
Polyatomic Ions List
Naming ionic compounds with polyatomic ions
Cation name + anion name If the anion is a polyatomic ion, use
the name of the polyatomic ion Ex 1) KNO3
Ex 2) Ca3(PO4)2
Writing names of ionic compounds
Given the formula, write the name:1. NaNO2
2. Ca(NO3)2
3. Rb2SO4
4. AlPO4
5. NH4Cl6. Al2(CO3)3
7. Mg(OH)2
Writing Formulas for Ionic Compounds with Polyatomic Ions
1. Write the symbols/formulas with charges for the anion and the cation
2. “Cross” the charge down to the bottom of the other side
1. Do not write the + or –3. Rewrite formula without charges, but
with the subscripts only Ex 1) sodium sulfate Ex 2) magnesium nitrate Ex 3) magnesium carbonate
Writing Formulas
Write formulas for the following ionic compounds:
1. sodium nitrite2. sodium nitrate3. magnesium sulfate4. aluminum carbonate5. calcium hydroxide6. ammonium oxide7. ammonium chloride8. magnesium nitrate
Hand in Writing Names and Formulas Practice Problems sheet
Start working on your homework: Week 10/11 Homework pages 5-6
Homework
Week 10 Homework pages 5 and 6 Quiz Tuesday: Writing ionic
compound formulas and names
Agenda
I. Do nowII. Check homeworkIII. Mixed practice: all kinds of ionic
compoundsIV. Exit ticketV. Naming and writing formulas for covalent
compoundsHomework: Week 10/11 Homework p. 8: FriQuiz on Naming Ionic Compounds: Fri (just
objective 3.5)
A: 22 November 2011
Take Out Homework: Week 10/11 p. 5-6
Objective: You will be able to name and write formulas for ionic
compounds Do now: Write the formula for the
compound tin (IV) carbonate.
Agenda
I. Do nowII. Homework checkIII. Naming/writing formulas for ionic
compounds: more practiceIV. Exit TicketHomework: Week 10/11 page 7: tomorrowFix pages 5-6: tomorrowQuiz tomorrow: Naming all kinds of ionic
compounds (Objective 3.5)
Mixed Practice: Naming Ionic Compounds
With your partner, complete this worksheet.
Be careful, some have transition metals that need a Roman numeral.
Some have polyatomic ions! Then, check p. 5-7 of the HW If you have not yet put unit 2 in
your green folder, do it now!
Exit Ticket
Objective 3.5
Homework
Week 10/11 Homework page 7: tomorrow
Fix pages 5-6 of homework: tomorrow Writing Names and Formulas for Ionic
Compounds Worksheet: tomorrow Quiz tomorrow (3.5: naming/writing
formulas for all types of ionic compounds)
A: 23 November 2011 Take Out Homework: Writing Names and
Formulas for Ionic Compounds Worksheet AND page 7
Objective: You will be able to: write names and formulas for covalent
compounds, including the first 10 hydrocarbons
Do now: Write formulas or names:a. lithium sulfideb. ammonium oxidec. Cu3(PO4)2
d. tin (IV) carbonate
Agenda
I. Do nowII. Check homeworkIII. Review!IV. Quiz on ionic compoundsV. Naming and writing formulas for covalent
compoundsVI. Practice ProblemsVII. Exit ticketVIII. HydrocarbonsHomework: Week 10/11 Homework p. 8: Tues.
Find the mistake!
On each card, there is a name or a formula.
Then, there is a formula or a name below – but it is wrong!!
Write one sentence to describe the mistake, then write the correct answer.
You have 90 seconds per card! Pass the card back when the timer
goes off.
Quiz, then do this, in order:
1. When you finish, turn your quiz over2. I’ll give you back your 3.1-3.4 Quiz3. Track Objectives 3.1 and 3.44. Leave out your tracking sheet for stamps!5. Correct your wrong answers on the 3.1 to
3.4 Quiz6. Make sure your folder is organized and
all your Unit 2 papers are in your green folder.
7. Work on something silently
Ionic or Covalent?1. NaCl2. NO2
3. N2Br4. NaI5. KNO3
6. CaS7. H2O8. Cl2
9. Cu(OH)2
10. CCl4
Naming Covalent Compounds
P2O5
What do the subscripts (little numbers)
mean?! Subscripts = The number of atoms
of each element!! Use prefixes to communicate how
many atoms of each element.
Prefix System 1 – mono* 2 – di 3 – tri 4 – tetra 5 – penta *never use mono if the FIRST
element listed in a compound has one atom.
The SECOND element gets an “-ide” ending
Examples
1. NO2
2. CO2
3. PCl5
4. P2S4
5. Nitrogen trioxide6. Carbon monoxide7. Dinitrogen tetrahydride
Write formulas/name these covalent compounds
9. NH3
10. CH4
11. CF4
12. H2O13. P3O5
14. SBr2
15. P2O3
16. NO
1. Dinitrogen monoxide2. Carbon tetrachloride3. Oxygen difluoride4. Sulfur trioxide5. Dichlorine octoxide6. Sulfur dibromide7. Dioxygen difluoride8. Xenon tetrafluoride
C: 23 November 2011
Take Out Homework: Week 10/11 p. 8Objective: You will be able to: write the names and formulas for the
first ten hydrocarbons draw Lewis structures for covalent
compoundsDo now: Write the name/formula for:
a. P4S5
b. nitrogen trifluoride
Agenda
1. Do now2. Check homework3. “Exit” ticket on covalent compounds4. Names and formulas of hydrocarbons5. Lewis structures examples6. Lewis structures problemsHomework: Week 12/13 Homework
pages 1-3 (up to VSEPR theory): Mon.
Exit Ticket
1. When you finish, turn it over2. Remain silent3. Track your objectives for the 3.1 to
3.4 Quiz4. Leave out your tracking sheet for
stamps!
Hydrocarbons
Hydrocarbons
Hydrocarbon – A combination of hydrogen atoms and carbon atoms covalently bonded together.
Alkane – A hydrocarbon where there are only single bonds between carbons.
Alkanes are said to be saturated with hydrogen atoms – there is a hydrogen every place you can put one!
Methane – Dot diagram
Draw a dot diagram to represent carbon and figure out how many hydrogen atoms can be bonded to it. Draw them.
Ethane
Draw a dot diagram to represent carbon bonded to another carbon and figure out how many hydrogen atoms there should be.
Propane
Draw a dot diagram to represent 3 carbon atoms bonded together and figure out how many hydrogen atoms there should be.
A: 29 November 2011
Take Out Homework: Week 10/11 page 8
Objective: You will be able to: draw Lewis Dot Structures for
covalent compounds Do now: Write names/formulas for:
a. P4S5
b. nitrogen trifluoridec. butane
Agenda
I. Do nowII. Check homeworkIII. Track Exit TicketIV. HydrocarbonsV. Lewis Structures examplesHomework: Week 12/13 Homework
pages 1-2: Weds.Quiz on Objectives 3.6-3.8: Thurs.
Alkane Nomenclature
Hydrocarbon Name Formula1. Methane CH4
2. Ethane C2H6
3. Propane C3H8
4. Butane C4H10
5. Pentane C5H12
6. Hexane C6H14
7. Heptane C7H16
8. Octane C8H18
9. Nonane C9H20
10. Decane C10H22
General Formula
CnH2n+2
A: 30 November 2011
Take Out Homework: Week 12/13 pages 1-2
Objective: You will be able to: draw Lewis structures for covalent
compounds Do now: Draw the Lewis structure
for H2. Circle all the pairs of electrons that are part of a covalent bond.
Agenda
I. Do nowII. Check homeworkIII. Review Lewis StructuresIV. Practice Drawing Lewis Structures!V. Exit TicketVI. Molecule shapes notesHomework: Week 12/13 Homework pages
2-3: Thurs.Quiz on objectives 3.4 through 3.9 on Friday
Lewis Dot Structures
Show covalent bonding using dots to represent valence electrons!
Examples
Draw Lewis structures for the following covalent compounds:
1. Cl2
2. H2O3. NH3
4. CH4
5. CO2
Lewis Dot Structures Assignment
With your partner, draw a Lewis dot structure for each of the covalent compounds on your white board.
Every two or three, raise your hand and have me sign your paper.
Each correct Lewis Structure = 10%!!
Exit Ticket
Front page only!! When you finish, check page 2 of
your homework, and complete page 3 due tomorrow!
A: Homework
Week 12/13 Homework pages 2-3: Thurs.
Quiz on objectives 3.4 through 3.9 on Friday
A: 2 December 2011
Take Out Homework: Week 12/13 pages 4-5 Lewis structures
Objective: You will be able to:determine the shape and bond angle of
a molecule using the VSEPR theory. Do Now: A molecule has four pairs of
electrons around the central atom, and none of them are non-bonding pairs. What shape will this molecule be? What is the angle of the bond? Draw a sketch.
Agenda
I. Do nowII. Track Exit TicketIII. Check homeworkIV. VSEPR Theory Practice Problems V. Exit Ticket: Molecule shapesVI. Quiz Review StationsHomework: Week 12/13 HW pages 4-5, draw
molecule shape, label and give bond angleQuiz Tuesday on objectives 3.4-3.9
Track Exit Ticket
Keep it in a safe place – you’ll need it at the end of this period.
Homework Answers
Lewis structure only
So, you are now experts on drawing pictures of molecules – Lewis Dot Structures.
But, molecules aren’t flat. What DO they look like?!
Molecule Shapes
How are shapes determined?
VSEPR Theory: Valence Shell Electron Pair Repulsion Theory Valence Shell – electrons in the
highest energy level Electron Pair Repulsion – pushing away
Pairs of electrons want to be as far from each other as possible in a molecule
This causes different molecules to have different shapes!
Non-bonding electrons: pairs of electrons that are not part of a bond.
Central atom: the atom in the middle
Does the molecule have four electron pairs around the central atom?**
How many non-bonding pairs does it have around the central atom?
How many non-bonding pairs does it have around the central atom?
yes no
0 1 0 1
How many atoms are bonded to the central atom?
2
Non-linear
117o
Trigonal Planar
120o
Linear
180o
3
Tetrahedral
109.5o
Trigonal pyramidal
107o
Non-linear
104o
**Double bonds count as ONE electron pair!!
2
TetrahedralFour electron pairsNo non-bonding pairs109.5o
Trigonal pyramidalFour electron pairsOne non-bonding pair107o
Non-linearFour electron pairsTwo non-bonding pairs104o
LinearLess than 4 electron pairsTwo atoms bonded to the central atom180o
Trigonal PlanarLess than four electron pairsThree atoms bonded to the central atom120o
Non-linearOne non-bonding pair117o
a. CCl4
b. CS2
c. NF3
d. BBr3
e. H2Sf. SeO2
On your blank paper (each person must turn in their own work):
1. Draw the Lewis Structure 2. Determine the shape using your
flow chart, and write it down3. Draw the shape and label the bond
angle.4. Make the molecule with your
modeling kit.5. Raise your hand and have me
check your work before you move on!
6. Pack up your molecule kit neatly!7. Complete pages 4-5 on your Week
12/13 Homework8. Study the hydrocarbons
Exit Ticket
Molecule shapes On the quiz, you’ll get a flow chart without examples
It will have the shape names and bond angles.
Then, organize your folder!
Review Stations
1. You’ll have 5 minutes per station.2. Complete the questions on your
answer sheet.3. Then, check your answers! (No
peeking until you’ve tried your hardest!)
4. If you finish a station early, work on the homework
Incentive
For each objective your partner gets mastery on, you’ll receive a bonus point.
What’s due
Your review stations answer sheet will be collected in 30 minutes.
If you finish a station early quiz each other on the prefixes or hydrocarbon names!
Homework: Week 12/13 HW pages 4-5, draw molecule
shapes label molecule shape and bond angle
Quiz Tuesday on objectives 3.4-3.9
Homework
Week 12/13 HW pages 4-5, draw molecule shapes
label molecule shape and bond angle
Quiz Tuesday on objectives 3.4-3.9
A: 6 December 2011
Take Out Homework: Stations Review Activity (I may already have yours.)
Objective: You will be able to show what you know about names and formulas of compounds, covalent bonding and molecule shapes.
Do now: Track your exit ticket for objectives 3.7, 3.8 and 3.9. Keep your tracking sheet out!
Agenda
I. Do nowII. Quiz!Homework: What objectives do you
need extra help on? What work are you missing? Make a plan to make up work!
Check no name work on cabinet on your own time.
Quiz
1. When you finish, raise your hand.2. Organize your handed back work into
your folder.3. Extra Credit: Choose one data set and…
graph it, labeling axes, give it a title calculate the slope of the line write an analysis paragraph to describe
the trend and describe the significance of the slope – due Monday
Homework
Graph + Analysis paragraph What objectives do you need extra
help on? What work are you missing? Make a plan to make up work!
Are any of the papers without names yours?!
Extra help today 3:30-4:30 pm.
2 December 2011
Objective: You will be able to: describe current scientific
research on the production of methane on Mars.
Do now: Complete the pre-video questions on your handout, #1-5
Agenda
I. Do nowII. Video clips and questionsIII. Article and questionsIV. DiscussionHomework: None!What objectives and work do you need to
do/redo to be successful this quarter?! Email me if you want a copy of a handout over the weekend!
Expectations
1. Carefully preview the questions for each video clip.
2. Watch each video silently and complete the answers to the questions as you watch.
3. After each video, you’ll have 3 minutes to work with a partner to complete your answers.
4. Make a note of your comments and questions on your handout for discussion after the video.
A: 7 December 2011
Objective: You will be able to: calculate the molar mass of a compound
and prepare for our field trip! Do now: a. What is the average atomic mass of
oxygen? b. What is the average atomic mass of
chlorine?c. Where do those masses come from?
How are they calculated?
Agenda
I. Do nowII. Molar mass notes and examplesIII. Practice ProblemsIV. Field trip expectationsV. Field trip skills and content practiceVI. GraphingHomework: Week 14 Homework p. 1:
Thurs., Biogen Pre-Lab: finish graph Thurs.
Counting Atoms
Make a list of elements with the number of atoms of each to the right:
a. Cob. COc. CO2
d. C6H12O6
e. Mg(NO3)2
Practice Problems
a. H2
b. H2Oc. MgCl2
d. Al(OH)3
e. Mg3(PO4)2
f. Ca(NO3)2
The Mole
Atoms are so tiny; how do we quantify their masses?
The mole: a unit for amount of substance In groups of 6.02 x 1023 atoms or
molecules 6.02 x 1023 atoms/molecules = 1 mole 6.02 x 1023 atoms/molecules =
Avogadro’s Number
Molar Mass
Molar mass is the mass in grams of one mole of a pure substance (units: g/mol)
Find the molar mass of… Oxygen Phosphorus Sodium Gold Copper
What about the molar mass of compounds?
Add up the masses of all the atoms of each element
Examplesa. H2
b. CO2
c. Al(OH)3
Practice Problems
Calculate the molar mass of:a. H2
b. H2Oc. MgCl2
d. Al(OH)3
e. Mg3(PO4)2
f. Ca(NO3)2
Homework
Week 14 Homework p. 1
A: 21 December 2011
Objective: You will be able to: calculate the percent composition
of an element in a compound Do now: (5 minutes, silently)
Calculate the molar mass of:a. carbon tetrachlorideb. sodium carbonate
Agenda
Do now Do now answers Percent composition examples Practice Problems Homework work timeHomework: Week 14 Homework page
2
Do Now Answers
Percent Composition
the percent by mass of each element in a compound
percent composition =
Example 1
Calculate the percent composition of each element in sodium chloride.
Example 2
Calculate the percent composition of each element in aluminum hydroxide.
Practice Problems
Calculate the percent composition by mass of each element in:
a. H2Ob. calcium chloridec. aluminum nitrate
Extension Problem
How many grams of aluminum are present in 10.0 grams of aluminum phosphate?
Homework
Week 14 Homework page 2
A: 21 December 2011
Objective (copy in your notebook!): You will be able to review molar mass and percent
composition determine percent sugar in bubble
gum Do now: Calculate the molar mass of
magnesium phosphate. Hint: Write the correct formula first!
Agenda
I. Do nowII. Review molar mass and percent
compositionIII. Percent sugar in bubble gum mini-
labIV. Goals ticket for lab report writingV. Lab report writing time! (106)Homework: Lab report Thurs. 12/22
Review
Molar Mass Percent Composition
Week 14 Homework Answers
More Practice
1. Calculate the molar mass of octane.2. Calculate the percent composition
of each element in octane.
Exit Ticket
Molar mass and percent composition
Percent Sugar in Bubblegum Lab
1. Select a chewer.2. Follow the directions carefully.3. Unless you are using a balance,
remain seated.4. As soon as you have completed
through step 4, fill in the spreadsheet.
5. This work will be collected at the end of 3rd period!
A: 20 December 2011
Objective: You will be able to: accomplish a SMART goal for your lab
report! Do now:
Track your exit ticket and quiz Leave out your tracking sheet for stamps Fill out your goals ticket to identify one
SMART goal for today’s lab report work time.
Agenda
Do now Goals and tracking Computer lab work time (305)Homework: Lab report due Thurs.
12/22
Announcements
Please use the checklist and attach it to your lab report.
You must print out your lab report, staple it, and have it on your desk during the Do Now on Thursday.
A: 21 December 2011
Objective: (copy in your notebook!)You will be able to: convert from percent composition
to empirical and molecular formulas review Unit 3 objectives
Do now: Calculate the molar mass for calcium nitrite.
Then, calculate the percent by mass of the nitrogen only.
Agenda
I. Do nowII. Questions about molar mass and percent
composition?III. Empirical vs. Molecular FormulasIV. Percent composition to FormulasV. Practice ProblemsVI. Review Unit 3Homework: Lab report due tomorrow (printed,
stapled, checklist and ready to go!)Week 15 HomeworkUnit 3 Quiz, 8 Objectives
Empirical vs. Molecular Formulas
empirical formula: the lowest whole number ratio of atoms of each element found by doing an experiment Example: CH2
molecular formula: the actual number of atoms of each element in a compound Example: C2H4, C3H6
What is the empirical formula of…
1. C6H12O6
2. N2O4
3. C6H14
4. CH4
What is the molecular formula of…
1. What is the molecular formula of CH2 with a molar mass of 56.12 g/mol?
2. What is the molecular formula of CH2O with a molar mass of 60.06 g/mol?
C: 21 December 2011
Objective: You will be able to: convert from percent composition
to empirical and molecular formulas
Do now:a. What is the empirical formula for
C4H12?b. What is the molecular formula for
NO2 with molar mass 92 g/mol?
Agenda
I. Do nowII. Questions about molar mass and percent
composition?III. Percent composition to FormulasIV. Practice ProblemsV. Review Unit 3Homework: Lab report due tomorrow
(printed, stapled, checklist and ready to go!)Finish Week 15 Homework: tomorrowUnit 3 Quiz tomorrow
What if…
You have percent composition, and need to calculate the empirical formula?
Determining an Empirical Formula
1. Determine the formula of a compound that is 42.88% carbon and 57.12% oxygen by mass.
2. Determine the formula of a compound that is 41.39% carbon, 3.48% hydrogen and 55.13% oxygen by mass. What is the molecular formula if the molar mass is 87.06 g/mol?
3. In a 10.0 g sample, 0.78 g is carbon and 9.22 g is chlorine. Determine the empirical formula.
Practice Problems
1. What is the empirical formula of a compound that is 25.9% nitrogen and 74.1% oxygen?
2. What is the empirical formula of a compound that is 79.8% carbon and 20.2% hydrogen? What is its molecular formula if the compounds molar mass is 60.16 g/mol?
3. What is the empirical formula of a compound that is 67.6% Hg, 10.8% S and 21.6% O?
Unit 3 Review!
With your partner, complete these review problems.
Start with the ones that are hard for you/that you need the most help with!
Stay seated and raise your hand if you have questions.
Each section completed = 10%
22 December 2011
Take Out Homework: Lab report Objective: You will be able to:
show what you know about Unit 3 Objectives
Do now: Questions?
Agenda
I. Questions?II. Unit 3 QuizHomework: None!(Though, you may want to study for
quiz retakes for after the vacation!)
Quiz
Turn it over when you are done. Neatly organize your unit 3 papers
and paperclip them. Keep this pile at your desk until everyone is done with the quiz.
Find something to work on silently!!
Homework
Lab report due tomorrow printed, stapled, checklist
Week 15 Homework front page: tomorrow
Quiz on Unit 3: tomorrow
A: 14 December 2011
Objective: You will be able to: determine criteria for an excellent
graph create and analyze graphs
Do now: On your handout on page 1, list as many criteria of an excellent graph as you can.
Agenda
I. Do nowII. Criteria for a GraphIII. Graphing a data set and line of best fitIV. Slope, and analyzing a graphV. Practice problemHomework: Be sure data set from Biogen lab
is graphed and meets all criteriaGraph analysis paragraph
Plot patients and determine their concentrations of Abeta: Thurs.
Criteria for an Excellent Graph
1. Labeled axes with units2. Title3. Graphed data points, accurately4. Consistent scale5. Clear, neat
Slope
Criteria for an Excellent Analysis
1. A description of what data is shown on the graph.
2. General trend of the line: “As ____ _____, then _____ _____.”
3. Range of the data.4. Discussion of important points and
outliers.
Analysis Paragraph
Plotting Unknowns
Assignment
Complete Data Set 2 on the back of the graph paper, including an analysis paragraph and the interpolation questions (e and f). Turn in just the graph: due Thurs.
Work on your Biogen graph determine the concentration of Abeta in
each of your four patients using interpolation
Make a data table to show this information Biogen graph due Thurs.
Homework
Data Set 2 on page 3 Biogen graph, including determining
the concentration of Abeta in each of your four patients
Due tomorrow
C: 14 December 2011
Take Out Homework: Data Set 2 Graph and Paragraph
Objective: You will be able to use interpolation and a graph to identify unknowns.
Do now: On the green handout, Part I only Silently, on your own. Collected in 7 minutes.
Agenda
Do now Interpolating from your line of best fit Secret code to the biogen data Lab report rubric Lab report writing time in 305Homework: Lab conclusion questions
due ThursdayLab report due Thursday, 12/22
Data Set 2
Interpolation Questions If you finish early, determine the
concentration of ABeta for all four of the patients from the Biogen lab
Directions: By 3:05…
1. Do questions e and f for data set 2.2. Plot your four patients on your Biogen
graph.3. Determine which of your patients got the
placebo and which got AntiPlaque.4. Make a table to show the patient number,
if the patients got the AntiPlaque, and their concentration of Abeta
5. Lab Conclusion Questions: due Thurs.
C: 19 December 2011
Objective: You will be able to meet your goal of writing one or more
sections of your lab report. Do now: Pick up a laptop and leave it
closed on your desk. Then, complete a goals ticket with a
specific goal to complete by the end of the period.
Then, track Exit Ticket 3.10 and Quiz 3.4-3.9
Agenda
I. Do nowII. Track ObjectivesIII. Lab report work timeHomework: Lab report due Thurs.
12/22Quiz on Unit 3 objectives: Thurs.
Lab Report Rubric
Lab report due Thursday 12/22 Attach the checklist, please!
This period
Use your time wisely. Ask permission to get out of your
seat for anything. Work quietly. Ask questions! Have me read
sections!
Track Objectives
Exit Ticket 3.10 Quiz 3.4-3.9 Leave it out on your desk during
work time for stamps! Then, start up your computer and
get to work!
Goals Ticket
What will you complete by the end of 8th period? You might not want to start working
at the beginning For example, you could start with
your procedure summary. Worth a 10 point class work grade. Check in with me by the end of the
period about your progress.
To 106!!
Quietly, please! Sign in, load up Word, and get
started immediately! Stay seated, work hard Use me as a resource. I’d love to
help you improve BEFORE the lap report is due.
