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Ms. Scotese |
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Chemistry 722Tues 5-2 By the end of the day your grades should be updated. Check your grades for any errors, and if you turned in any late/absent work, make sure has been entered. This site may help you calculate your average:
EXTRA CREDIT!!! BRING YOUR LAB BOOK.
.
ALL LATE/ABSENT WORK MUST BE TURNED IN BY FRIDAY 5-29
The review week quizzes will be given during lunch on Weds 5-27 (stoichiometry and heat) and Friday 5-29 (radioactivity and half lives)
.
Fri 5-29 pH lab due
.
Thurs 5-28
. 1-3) pH=2
. 1)What is the pOH?
. 2) What is [H+] ?
. 3) What is the [OH-] ?
. 4-6) [OH-] = 0.0000079
. 1)What is the pOH?
. 2) What is [H+] ?
. 3) What is the pH
. ? Weds 5-20 Give the following electron configurations:
1) Si 2) Ca 3) Co 4) Se 5) Pd 6) Sb 7) Au 8) Po 9) Fm 10) Mt . Mon 5-18 Read and outline chapter 28
.
Fri 5-15 Read and outline chapter 5 .
Tues 5-12Solve these problems:
1) If 190 grams of Reginium is left after 28 hours, how much Reginium
was there initially. Assume the half-life of Reginium is 22 hours,
2) If 283 g of Scotesium decays with a half-life of 11.6 minutes,
how much Scotesium will be left after 84 minutes?
3) 894 grams of Sophomorium decays into Juniorium with a half life
of 365 days. How much Juniorium will have formed after 46 days? .
Mon 5-11 Complete these nuclear equations:
. 1) 9Li > e-1
. 2) 257No > 253Fm
. 3) 201Hg + e-1 >
. 4) > 118I + e+1
.
Fri 5-8
.1) An ion has 49 protons, 46 electrons and 66 neutrons. Give the symbol and tell if it is a common or rare isotope. 2) An ion has a mass number of 51 and an atomic number of 23 and has a +2 charge. Give the number of protons, electrons and neutrons and its symbol and tell if it is a common or rare isotope. 3) An ion has 52 protons, 54 electrons and 75 neutrons. Give the symbol and tell if it is a common or rare isotope. 4) 75As -3 Give the number of protons, elec- trons and neutrons and tell if it is a common or rare isotope. Weds 5-6 Bring your textbook to class!!!!!!!!!
.
Tues 5-5 Bring your textbook to class!!!!!!!!!
. .Fri 5-1 Test on stoichiometry including heat and labs. Some practice problems are
. available in documents as practice problems for test 5-1
.
Weds 4-29 Heat of candle lab due
.
Thurs 4-23 If you react 3285 g of HCl with 1920 g Fe2O3
. 1) Delta H = ?
. 2) Is the reaction exothermic or endothermic?
. 3) How much heat is produced/ required?
. 4) How many formula units of FeCl3 are produced?
..
Tues 4-21-09 1792 liters of nitrogen at STP reacts with 420 g of hydrogen.
. 1) How many moles of NH3 form?
. 2) How many molecules of NH3 form?
. 3) How many grams of NH3 form?
. 4) How many liters at STP of NH3 form?
. 5) If you collect 2004 g of NH3 what is the percent yield?
. 6) If you collect 6.0 x 10 25 molecules of NH3 what is the percent yield?
. 7) If you collect 3006 liters of NH3 what is the percent yield?
. 8) How many moles of excess are used?
. 9) How many moles of excess are not used? .
Mon 4-20 Do these problems over the break to keep from forgetting.
. p 262-263 #38abc, 44a-d, 46a-d, 52a-b, 54a-b
.
Weds 4-8-09 4200grams of aluminum cyanide react
. with 5220 g of tantalum (V) sulfide.
. 1) Balance the reaction
. 2-3) How many moles of each reactant are there?
. 4) Which reactant is the limiting reactant?
. 5-6) How many moles of each product form?
. 7-8) What mass of each product forms?
. 9-10) How many formula units of each product form?
.11) How many moles of excess are used?
.12) How many moles of excess are not used?
.13) How many grams of excess are used?
.14) How many grams of excess are not used? .
Mon 4-6
.1) Find the formula of the hydrate:
. mass of the crucible = 40 g
. mass of the crucible and BaBr2.XH2O = 298.3g
. mass of the crucible and the anhydrous hydrate = 247.9g
. 2-6)Ten moles of cesium oxide reacts with 8 moles of chlorine gas.
. 2) Balance the reaction.
. 3) What is the limiting reactant?
. 4) What is the excess reactant?
. 5) How many moles cesium chloride form?
. 6) How many moles of oxygen form?
. 7-9) You burn 600 grams of isopropanol (C3H8O) in 6.02 x 1028 molecules of oxygen.
. 7) Give the balanced reaction.
. 8) What is the limiting reactant?
. 9) What mass of CO2 forms?
.
Thurs 34-1 Read and outline chapter 9.
.
Fri 3-27 S'more lab due
.
Thurs 3-26 Formula of a hydrate lab due
.
Tues 3-24 Worksheet due
.
Weds 3-18 Bring lab data to class
.
ALL LATE/ABSENT WORK MUST BE TURNED IN BY THE END OF THE DAY WEDNESDAY 3-18-09
. Mon 3-9 p 195 # 39, 40, 41, 42, 43.
. Weds 3-4 Give the empirical and molecular formulas of these compounds:
. 1) carbon 10.714% and bromine 89.286 %
. molar mass is 4480g/mole
. 2) silicon 14% and iodine 86% 1 mole = 4736 g
.
Tues 3-3-09 Outline of chapter 7 due .
Mon 3-2-09 Percent of sugar in bubble gum lab due
.
Fri 2-27 Give the percent composition (by mass) of
. 1) disilicon tetrabromide
. 2) titanic carbonate
. 3) cupric arsenate
. 4) aluminum hydroxide
.
Thurs 2-26 give the molar mass of these compounds:
. 1) magnesium arsenate
. 2) tetrasilicon hexabromide
. 3) aluminum acetate
. 4) stannic cyanide
.
Tues 2-24 BRING YOUR BOOK TO CLASS!!!!
. Fri 2-20 Test on electrolyte lab, precipitate lab and balancing reactions
and types of reactions. An extra study guide is available in documents
as study guide test 4
.
Weds 2-18 Worksheet on balancing, equalities and reaction types is due.
.
Thurs 2-5 Solution-precipitate lab due. Give the complete ionic and net
ionic equations for the third set for extra credit.
.
Balance these reactions, identify the type of reaction and give the equality
that shows that atoms are conserved. Assume all reactions occur.
1) aluminum reacts with fluorine
2) titanic nitrate reacts with aluminum carbonate
3) gallium fluoride reacts with oxygen
4) vanadium (V) oxide decomposes
5) scandium nitride reacts with fluorine
.
Weds 2-4 Balance these reactions, identify the type of reaction and give the equality
that shows that atoms are conserved. Assume all reactions occur.
1) sodium reacts with oxygen
2) sodium pyrophosphate reacts with calcium arsenate
3) gallium fluoride decomposes
.
Tues 2-3 Balance these reactions: Assume the reactions occur.
1) thallic borate reacts with sodium pyrophosphate (complete molecular)
2) cobaltic phosphate reacts with stannic carbonate (complete molecular)
3-5) ammonium sulfide reacts with cobaltous nitrate (complete molecular,
complete ionic and net ionic) The precipitate is cobaltous sulfide.
.
Weds 1-28 Read and outline chapter 8
Balance the reactions from the first day of the lab.
.
Tues 1-27 Conductivity lab due
Balance these reactions and give the equality that shows that the
atoms are conserved. Assume all reactions occur.
1) calcium cyanide reacts with aluminum orthosilicate
2) silver sulfide reacts with auric phosphate
3) cobaltic sulfide reacts with titanic perchlorite
.
Mon 1-26 Balance these reactions and give the equality that shows that the
atoms are conserved. Assume all reactions occur.
1) lithium iodide reacts with magnesium nitride
2) sodium sulfide reacts with chromous nitride
3) chromic oxide reacts with stannic fluoride
.
Fri 1-23 Bring your lab books!
Balance these reactions and give the equality that shows that the
atoms are conserved. Assume all reactions occur.
1) ferric chloride reacts with cupric bromide
2) sodium sulfide reacts with magnesium nitride
3) titanic nitride reacts with aluminum sulfide
ALL LATE HOMEWORK
MUST BE TURNED IN BY
FRIDAY JANUARY 9
YOUR STUDY GUIDE FOR THE FINAL EXAM IS IN
DOCUMENTS AS FINAL EXAM STUDY GUIDE.
After school during the first week in January you will be able to take quizzes
on earlier material as a way to raise your grade. The topics covered will be:
Monday 1-5 scientific notation, signicant figures
Tuesday 1-6 conversions
Wednesday 1-7 calculation of uncertainty
Thursday 1-8 density problems
Friday 1-9 solubility problems
An extra credit project that you can do over the break is
available in documents.
Tues 1-6 ION SUPERQUIZ
Mon 1-5 Read and outline chapter 5
Weds 12-17 Fourth ion quiz bisulfide to thiosulfate
Tues 12-16 Third ion quiz acetate to bisulfate
Read the lab on precipitation reactions.
Mon 12-15 Second ion quiz ferric to zinc
Friday 12-12 First ion quiz aluminum to hydronium
Thurs 12-11 Test on all material covered since the last test. Your study guide
was given to you on 10-27 when we started the unit.
Weds 12-10 Bring your book.
Thurs 12-4 Read lab 6 Conductivity of Solutes, Solvents and Solutions
Prepare a data table in your lab notebook
Tues 11-25 Lab 5a and 5b due
Here are the last problems we did in class with answers below:
1) How much water is needed to make a saturated solution
of 1400g NaNO3 at 85oC.
2) If the solution is cooled to 10oC how much NaNO3
will remain in solution?
3) How much of the NaNO3 will form a ppt?
ANSWERS: 1) 1000 g H20 2) 800 g NaNO3
3) 600 g NaNO3
Mon 11-24 Outline chapter 4 due
Answer these questions using the graph on p 504.
1) How much water will be needed to disolve 47.9 g
of NH4Cl at 75o C? 2) If the temperature is dropped to 34oC, how much
NH4Cl will precipitate out of solution? 3) If the temperature is dropped to 34oC, how much
NH4Cl will remain in solution? Thurs 11-20 Outline chapter 2 due
p 47-48 # 26, 30, 32, 34, 35, 41, 42, 44,
p 49 # 1-17
Tues 11-11 Be ready to do lab 5a Tues 11-4
Be ready to do 5b part II. Your procedure and data table
must be in your lab book before you will be allowed to start.
1) 0.023000 microliters = liters
2) 0.00460 grams = kilograms
3) 4.00 x 103 nanometers = micrometers
4) 0.020 x 10-4 cm3 = liters
Fri 10-31 Lab report for lab 4 due. Thurs 10-30
1) 14600 dekaliter = liters
2) 0.00560 grams = nanograms
3) 23400 x 103 micrometers = meters
4) 0.00020 x 10-4 g = miligrams
Weds 10-29 Graph data for lab 5b part I.
Read and draw the procedure for lab 5b part II
Tues 10-28 Read and draw the procedure for lab 5b part I.
Prepare the data table for lab 5b part I.
Mon 10-27 Bring in your calculated thickness of the foil.
ALL LATE/ABSENT WORK MUST BE TURNED IN BY WEDNESDAY, OCTOBER 22nd !!!! Weds 10-22 Test on all material covered so far this quarter.
The study guide is the sheet given to you at the beginning
of the unit and you will also need to know calculation of
uncertainty and simple conversions. Study your homework,
classwork, labs and quizzes.
Fri 10-17 p 78-79 #36, 40, 44, 61, 64 and 75
p 81 #1-12
Complete calculations for part I of the lab.
Be ready to do part II
Thurs 10-9 The answer to the problem we were doing in class is
27.1 + 3.9
Here is the homework:
Add or subtract these numbers with their uncertainties:
1) 56.497 + .465 2) 41.68 + .61
+ 5.122 + .385 -17.16 + .24
Give these answers inscientific notation with the correct
number of significant figures
3) 11445/0.700 4) 29535/0.300
Weds 10-8 Read all of lab 4. Draw the procedure for part I.
Read p 68-69
Add or subtract these numbers with their uncertainties:
1) 26.367 + .035 2) 81.24 + .08
+ 5.042 + .075 -7.26 + .05
Tues 10-7 Lab 3 due.
Weds 10-1 Graph your lab data on the same graph you used for the
data from yesterday.
Tues 9-29 Graph your lab data.
Prepare the data sheet for lab 3 part 2
Fri 9-26 Prepare the data sheet for lab 3 part 1
Here is the solution to the killer problem:
1year X 365 days X 3 bowls X 1 bag X $12 X 1 hour X 1 day of work =
1 1 year 2 days 200 bowls 1 bag $5 1 hour of work
Weds 9-24 If 6 birds = 2 nests 1) How many cheeps are there if
8 nests = 5 eggs you have 15 birds?
3 eggs = 2 cheeps
2-3) If 8 eeks = 14 ghosts
13 creeps = 2 eeks
7 slimes = 3 ghosts
2) How many creeps are there if you have 19 slimes?
3) How many ghosts are there if you have 12 creeps? Tues 9-23
Read lab 3 and draw the procedure.
Use this information to solve the problems:
17 dogs = 3.000 cats
12 birds = 11 cats
16 dogs = 44 rabbits
1) 97.8 cats = birds
2) 87.00 dogs = rabbits
3) 61.000 dogs = cats
Mon 9-22 Bring all graded papers to class.
Be able to give the answers in scientific notation with the correct
number of significant figures.
1) If 0.090 pens equals 50.0 apples, how many apples are in 75 pens?
2) How many orcs are in 46 blips if 11 blips = 2.00 orcs
Answers
1) 75 pens x 50.0 apples = 4.2 x 10 4 apples
1 0.090 pens
2) 46 blips x 2.00 orcs = 8.4 x 10 0orcs
1 11 blips
FRIDAY 9-19 ANY LATE OR ABSENT WORK THAT YOU WANT INCLUDED IN YOUR PROGRESS REPORT GRADE MUST BE TURNED IN BY THE END OF THE SCHOOL DAY Thurs 9-18 Test on all material covered so far this quarter.
Weds 9-17 Lab 2b due
Tues 9-16 Lab 2 due
Mon 9-15 Give the answers in scientific notation with the correct number
of significant digits. If you want to practice first, there are some
practice problems and the answers below.
Homework: 1) 1300.00/ .0014000
2) 1.3000 x .00200
3) 5.0000 + 2.20
4) 735.98 -.643
Practice: 1) 8.000/1.20 = 6.67 x 10 0
2) 0.006 x 1.20 = 7 x 10 -3
3) 30.005 + 4.60500 = 34.610
4) 20.0 - 8.888 = 11.1
Weds 9-10 List the substances in order of melting for the candle.
List the substances in order of melting for the Bunsen burner.
Mon 9-8 Give the number of significant digits and underline each significant digit.
1) 980007 2) 900.008700 3) 900080007000
4) 0.000900080007000 5) 900800700.00
Give the answers to the problems 1-4 in scientific notation with the
correct number of significan digits.
1) 780/30 2) 6.0 x 109 / 5.00 x 103
3) 11.00 x 0.00400 4) 9.00 x 10-14 / 5.0 x 10-8 Thurs 9-4 Be ready to do lab 2
Weds 9-3 Lab Report 1 due
Complete the regularity worksheet
Read lab 2
Weds 8-27 Read pages 15-22 in your textbook. Return the signed and
dated Safety in the Laboratory sheet and the Safety Procedure
in the Laboratory worksheet. Read Experiment 1 (p 4-5) and
prepare a lab data sheet. Use a series to drawings to indicate
the procedure for the lab.
Tues 8-26 Number the pages of your pink lab book. Return your
signed safety contract.
Mon 8-25 Bring in a copy of your contract signed by you and a
parent or guardian. Fri 5-30 For the molecule SeBr2 give the
1) dot drawing 2) hybridization, 3) shape, 4) bond angle
Answers are below 5-13
Tues 5-27 Do the dot drawings of these molecules:
1) CNH5
2) C2H6O There are 2 different answers and I will give extra
credit if you give both answers.
3) C2H5Br
Tues 5-20 Test on molarity, pH, pOH, titration, electrons in atoms
energy, wavelength and frequency & electron configurations.
The study guide/s is on the web page in study guide and
practice problems. Also study your homework, quizzes, labs
and notes.
Weds 5-14 Give the electron configuration of
1) nickel
2) gold
3) astatine
You may use any method you choose.
Answers to homework for 5-30
2) 4sp3 11 11 1 1 3) Vor bent 4) about 105o
Tues 5-13 Give the electron configurations of
1) silver
2) bismuth
3) fermium
You may use the short-cut.
Mon 5-12 Write the electron configuration of
1) sulfur 2) aluminum 3)silicon
Fri 5-9 p 609 #40, 42, p 674 #44, 45, 48
Tues 5-6 Review naming acids.
1-2) If the H + concentration = 4.73 x 10 -11
1) What is the pH?
2) What is the pOH?
3-4) If the OH - concentration = 9.54 x 10 -3
3)1) What is the pOH?
4) What is the pH?
5-7) If the pH =9.27 5) What is the H + concentration?
6) What is the pOH?
7)What is the OH - concentration?
Mon 5-5 Read chapter 20. Outline pages 576-593.
pH lab due
Fri 5-2 If 153ml of 2.1 M lithium nitrate is allowed to react with
26 ml of 3.8 M calcium phosphate...
1) Balance the reaction
2-3) Give the number of moles of each product formed
4) Give the number of moles of excess reactant that are used
5) Give the number of moles of excess reactant that are not used 6) If the potassium bromide that was produced is dissolved in
450ml of water, what is the molarity of the resulting solution? Thurs 5-1 If 160ml of 5.1 M potassium phosphate is allowed to react with
120 ml of 2.7 M calcium bromide...
1) Balance the reaction
2-3) Give the number of moles of each product formed
4) Give the number of moles of excess reactant that are used
5) Give the number of moles of excess reactant that are not used 6) If the potassium bromide that was produced is dissolved in
250 ml of water, what is the molarity of the resulting solution?
Weds 4-30 If 40 ml of 3.4M lithium fluoride reacts with 60ml of 4.9 M
gallium oxide...
1) How many moles of each product will be produced?
2) If you dissolve the lithium oxide which was produced in 4 liters
of water what will be the molarity of the resulting solution? Mon 4-28 Read chapter 18. Outline 509-518
Thurs 4-24 Test on heat and radioactivity. Part of your study guide is in documents
It is listed as test 6.
Weds 4-16
Everyone should do this:
2) Uranium-235 is struck by a neutron and undergoes fission.
It produces 3 neutrons, molybdenum-101 and one other product.
Write a equation for this and tell what the other product is. ALTERNATE ASSIGNMENT:
Solve these problems:
1) If 749 g of Chemistrium decays with a half-life of 64 minutes,
how much Chemistrium will be left after 51 minutes?
2) 56.9 grams of Failium decays into Passium with a half life
of 21 seconds. How much Passium will have formed after 6
seconds?
3) If 499 grams of Studentium is left after 43.1 hours, how much Studentium
was there initially. Assume the half-life of Studentium is 7.8 hours.
4) Uranium-235 is struck by a neutron and undergoes fission.
It produces 2 neutrons, cesium-144 and one other product.
Write a equation for this and tell what the other product is. Tues 4-15 Solve these problems:
1) If 190 grams of Reginium is left after 28 hours, how much Reginium
was there initially. Assume the half-life of Reginium is 22 hours,
2) If 283 g of Scotesium decays with a half-life of 11.6 minutes,
how much Scotesium will be left after 84 minutes?
3) 894 grams of Sophomorium decays into Juniorium with a half life
of 365 days. How much Juniorium will have formed after 46 days?
4) When Uranium-235 is struck by a neutron it produces 3 neutrons,
Tin-132 and one other product. What is the other product? Write the equation. Mon 4-14 p864 #24, 36, 48, 50, 52 a, b, c
Fri 4-11 Radioactivity lab due
Thurs 4-10 Graph your data for the radioactivity lab on graph paper.
Tues 4-8 p 865 #45a, 47
Mon 4-7 Read and outline chapter 28. Review chapter 5 if necessary.
Fri 4-4 Bring all graded papers to class. Weds 4-2 The second retake quiz will be given after school.
Tues 4-1 Test on material covered this quarter.
Emphasis will be on recent work and on labs.
Your study guide is in documents
The first retake quiz will be given after school.
ALL LATE/ABSENT WORK
MUST BE TURNED IN BY
MONDAY 3-31 IF YOU WANT
THE WORK INCLUDED IN
YOUR THIRD QUARTER
GRADE!!!!! Over Easter break you may earn extra credit by visiting two museum
exhibits. One is at the Field Museum and is about George
Washington Carver (an early industrial/agricultural chemist).
The other exhibit is at the Museum of Science and Industry
and and is called The Glass Experience.
Weds 3-19 Birthday candle lab due
Weds 3-12 Solve: 560 g of C2H4 burn (complete combustion) in
22400
Mon 3-10 S'mores lab due
Fri 3-7 Lab Report on Formula of a Hydrate due
Weds 3-5 Bring your mole ratios for the lab to class.
Mon 3-3 Outline of chapter 9 due
You combine 6200 g of sodium hydroxide with 2450 g of
sulfuric acid and collect 600 g of H2O,
1) balance the reaction
8) What is your percent yeild?
Here is a practice problem: If 4592 g of sodium phosphate reacts with
6.02 x 1025 f. un. of barium chloride and 8000 g barium phosphate
is collected, what is the percent yeild? Answer: 95% If 51 moles
of NaCl are collected what is the percent yeild? Answer: 61% Thurs 2-28 33 moles of stannic nitrate reacts with 1.806 x 10 25 f.un.
of cupric phosphate.
1) balance the reaction
Tues 2-26 BRING YOUR BOOK!!! Mon 2-25 Bring all graded papers to class!! Fri 2-22 ALL LATE/ABSENT WORK MUST
Tues 2-19 Test on stoichiometry, percent composition, empirical and
molecular formulas. You must be able to write balanced
equations for reactions. Your study guide is on the website
in documents.
The make-up quiz for the quiz given on 2-5 will be given
before and after school.
Weds 2-13 Seventy-two moles of magnesium nitrate react with 40 moles of ceric arsenate.
1) balance the reaction
Tues 2-12 Eleven moles of propane (C3H8) is burned with 400 moles of oxygen.
1) balance the reaction
Tues 2-5 Alternate assignment:
Show all work.
A compound has a molar mass of 4088 grams and contains
8.22% carbon
26.03 % fluorine
65.75% tellurium
1) What is the empirical formula?
2) What is the molecular formula?
Original assignment: A compound has a molar mass of 288 grams and contains
50% carbon
5.5556 % hydrogen
44.444% oxygen
1) What is the empirical formula?
2) What is the molecular formula?
3) 3.21 x 10 25 formula units ferric carbonate = g
4) 321 g ferric carbonate= moles
6) 6.94 x 10 23 formula units ammonium sulfate = g
Mon 1-28 Read and outline chapter 7
Give the molar mass of
1) ferric nitrate 2) cuprous carbonate
3) titanic arsenate 4) auric orthosilicate
5) ceric hydroxide 6) cobaltous pyrophosphate
Fri 1-25 Balance the reactions for the incomplete combustion of
1) C6H12 2) C8H18 3) C9H20O7 4) 3) C9H20O8
Balance the reactions for the complete combustion of
1) C5H10 2) C8H18 3) C9H18
4) C5H12O3 5) C8H16O5 6) C9H20O7
Thurs 1-24 Balance the reactions for the complete combustion of
1) C5H12O4 2) C8H16O6 3) C9H20O8
Weds 1-23 If you were absent and did not turn this in before 1-24 before class do these instead:
Balance the reactions for the complete combustion of
1) C7H12 2) C8H12 3) C10H20 Balance the reactions for the complete combustion of (original hw set) 1) C5H12 2) C8H16 3) C9H20
Weds 1-16-08 Final Exam You can download your study guide from documents. There are
33 practice questions and a list of topics and terms that you should know. Try to complete the study guide during Christmas vacation.
1-11-08 Balance the reaction and give the equality for each of these: (assume all reactions occur) This assignment can be done to replace the grade on the assignment that was due on 1-8
1) ferric hydroxide reacts with cupric orthosilicate
2) ammonium ferrocyanide reacts with calcium phosphite
1-8-08 Balance the reaction and give the equality for each of these: (assume all reactions occur)
1) aluminum orthosilicate reacts with lithium bromide
2) ammonium arsenate reacts with calcium pyrophosphate
ALL LATE AND ABSENT WORK MUST BE TURNED IN BY FRIDAY 12-21-07
Thurs 12-20
MAKE UP ION QUIZZES during 5a lunch. You may bring your lunch and eat while taking the quizzes Weds12-12 superquiz on all ions
Naming compounds workwheet due
Tues 12-11 Sixth ion quiz all anions on the list
Thrus 12-6 Fifth ion quiz - hydrogen oxalate or bioxalate through thiosulfate
Weds 12-5 Prepare for the lab on conductivity of solutes, solvents and solutions
Fourth ion quiz -acetate through hydrogen carbonate or bicarbonate
Tues 12-4 Lab 5b&c due
Mon 12-3 Third ion quiz - all positive ions
Fri 11-30 Second ion quiz - hydrogen through zinc
Thurs 11-29 First ion quiz - aluminum through gold
Tues 11-27 Test on all work covered this quarter. If you lose your study guide, you may download a copy from documents. ANYONE WHO WANTS EXTRA TIME FOR THE TEST MAY START DURING 5A LUNCH. Bring your lunch to class.
Mon 11-26 Complete the second part of the worksheet.
Tues 11-20 Read and outline chapter 6
Graph lab data
Complete the first part of the worksheet
Mon 11-19 Pre-lab for lab 5b (mixtures)
11-13 Answers to problems in class:
1) 120g KNO3 = 300g KNO3 x=250 g H2O
100 g H2O x
2) At 32C 40g KNO3 = x x= 100 g KNO3
100 g H2O 250 g H2O
So 100 g KNO3 will remain dissolved while 300-100 =200 g KNO3 will be the ppt.
Fri 11-9 Lab 5a due
Thurs 11-8 Bring your calculated Rf values for each color on your chromatogram
Tues 11-6 Read and draw up your procedure for lab 5a. Fri 11-2 Read p 500-504. BRING YOUR BOOK TO CLASS!!! Weds 10-31 Correct your quiz. Thurs 10-25 BRING YOUR BOOK TO CLASS!!! Weds 10-24 BRING BOOK TO CLASS !!! Mon 10-22 Density lab is due: Here is the class data of the thickness of the foil for your histogram: 0.0024 cm, 0.0016 cm, 0.0016 cm, 0.0015 cm, 0.0016 cm, 0.0017 cm, 0.0016 cm, 0.0017 cm, 0.0015 cm, 0.0016 cm, 0.0031 cm, 0.0017 cm,0.0028 cm,0.0020 cm, 0.0011 cm,0.0019 cm,0.0019 cm,0.0017 cm,0.0016 cm, Thursday 10-18 Calculate the density of your solid with uncertainty. A copy of your study guide is available in documents. All work must be turned in by 10-19 if you wish to have it included in your first quarter grade. Here is the solution to the problem we did in class: The mass of the empty cylinder is 92.64 + .01g The mass of the cylinder and the liquid is 158.03 + .01g The volume of the liquid in the cylinder is 7.3 + .1ml To get the mass of the liquid subtract cylinder & liquid -empty cylinder = mass of the liquid 158.03 + .01g - 92.64 + .01g = 65.39 + .02g To get the density divide: D=m/v = 65.39 + .02g / 7.3 + .1ml Density = 65.39g / 7.3 ml =8.9575...g/ml To get the uncertainty: .02/65.39 = .000305857... .1/7.3 = .0136986... .000305857 + .0136986 = .014004487... .014004487 x 8.9575 = .12544... Rounding for significant figures gives: 8.9575g/ml becomes 9.0 and .12544... becomes .1 So the answer is 9.0 + .1 g/ml Tuesday 10-23 Test on all material covered this quarter. Emphasis will be on the material covered since the last test Monday 10-15 Calculate the density of liquid A and B with your uncertainties and the correct number of significant figures Tues 10-9 Give the answers to the questions in scientific notation. Show your set-up and all work to get full credit. 1) A cube is 6 cm on each side. Give its volume in liters. 2) A cube is 6 mm on each side. Give its volume in mililiters. 3) A cube is 6 dekameters on each side. Give its volume in centiliters. Write the purpose and procedure for lab 4. Fri 10-5 Lab 3 due Weds 10-3 Give the answers to the following metric conversions. SHOW ALL WORK!!! 1) 72 ml = liters 2) 72 liters = ml 3) 72 dag = g 4) 72 dg = hg Tues 10-2 Continue to work on completing your lab report. Mon 10-1 Plot your data for part 1 and part 2 on a graph with temperature on the Y axis (dependent variable) and time on the X axis (independent variable). See calculations section. Tues 9-25 Test on all material covered this quarter. Mon 9-24 Procedure for lab 3 due Fri 9-21 Read and outline chapter 3 due Use the information given below to solve the questions. 5.00 mits = 11 pets 12 curs = 7.000 bells 8.0 dabs = 900 figs 7.2 dabs = 6.4 apes 3.00 apes = 7.1 eggs 13 mits = 0.006 curs 0.0040 pets=80.0 figs 2.00 eggs=17 noses 19.0 pets = 27 whines Give the answers to these problems in scientific notation: 1) How many figs are in 317.0 mits? 2) How many eggs are in 0.000452 pets? Thurs 9-20 Show the SET UPS for all problems. Answers are included so you can check your work. 1) If 6.0 hop = 9.0 pins, how many pins are there in 18 hops? answer=2.7 x 101 pins 2) If 6.0 hops = 9.0 pins, how many hops are there in 18 pins? answer=1.2 x 101 hops 3) If 7.0 bits = 8.0 mats, how many bits are there in 24 mats? answer=2.1 x 101 bits Weds 9-19 Lab 2a due Mon 9-17 Lab 2b Bead Lab is due Fri 9-14 Bring 1 gallon of DISTILLED water to class Read and Outline chapter 2 Thurs 9-13 Read lab 2a. Write the purpose and draw the procedure for the lab Weds 9-12 Lab report 1 due. First Regularity worksheet due p 27 # 1-17. Tues 9-11 RETURN SIGNED FLINN SAFETY CONTRACT ! Thurs 9-6 Fill out the first of the two columns with an O for observation or an I for interpretation. Fill out the second of the two columns with L for qualitative observations or an N for quantitative observations. Weds 9-5 List your observations in your lab book with 2 columns to the right. Tues 9-4 Number the pages in your pink lab book. Read and outline chapter 1 in your text. Read lab 1 the candle. Write the purpose and draw the procedure for the candle lab in your lab book. Fri 8-31 Print out a copy of the class rules and bring it to class signed by you and a parent or guardian. |
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