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Solutions. Chemistry Lowell High School. Agenda. FYI Introductions Preamble #1. Monday, January 29, 2007. FYI’s. Lab notebook 1/31 Wednesday Book Check 2/5 Monday Binder Check2/5 Monday RLog 152/6 Tuesday. Monday, January 29, 2007. First Day Stuff. - PowerPoint PPT PresentationTRANSCRIPT
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Solutions
Chemistry
Lowell High School
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Agenda FYI Introductions Preamble #1
Monday, January 29, 2007
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FYI’s Lab notebook 1/31
Wednesday Book Check 2/5 Monday Binder Check 2/5 Monday RLog 15 2/6 Tuesday
Monday, January 29, 2007
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First Day Stuff Website:
http://geocities.com/lowellchemistry Ms. Rotter Teammates/ Class setup Reading Logs Lab notebooks (Thursday)
Monday, January 29, 2007
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Preamble #1 You have 4 glasses of water. In which cup
will a teabag dissolve the quickest? In which cup will an ice cube melt the fastest? In which cup will a ¼ teaspoon of salt dissolve the quickest? Rank the cups for each of those situations.
1. 300mL at 25 deg C 2. 300mL at 85 deg C 3. 50mL at 25 deg C 4. 50mL at 85 deg C
Monday, January 29, 2007
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Concentration
Solute – What is dissolved (smaller) Solvent – What solute is dissolved in
(larger) Solution – mixture of solute and solvent Concentration = measure of how much
solute is dissolved into the solvent
Monday, January 29, 2007
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Concentration
Types of Concentrations: Mass Percent = mass solute/mass solution
x 100% Molarity = mol solute/L solution Molality = kg solute/L solution Normality = # equivalents/L solution
Monday, January 29, 2007
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Agenda FYI Concentration Preamble #2 Book/ID Handout
Tuesday, January 30, 2007
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FYI’s Lab notebook 1/31
Wednesday Book Check 2/5 Monday Binder Check 2/5 Monday RLog 15 2/6 Tuesday
Tuesday, January 30, 2007
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Concentration
Solute – What is dissolved (smaller) Solvent – What solute is dissolved in
(larger) Solution – mixture of solute and solvent Concentration = measure of how much
solute is dissolved into the solvent
Tuesday, January 30, 2007
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Concentration
Types of Concentrations: Mass Percent = mass solute/mass solution
x 100% Molarity = mol solute/L solution Molality = kg solute/L solution Normality = # equivalents/L solution
Tuesday, January 30, 2007
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Preamble #2 You have a sugar solution of a certain concentration (call this solution A). You pour 1/4 of this solution into a beaker, and add an equivalent volume of water (call this solution B)
1) What is the ratio of amount of sugar between A and B?2) What is the ratio of volumes between A and B?3) What is the ratio of concentrations between A and B?4) How much water would you add to A to create the concentration of B?
Tuesday, January 30, 2007
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Preamble #2 (ctnd) Now, assume that solution A started with a volume of 155mL and 13g of glucose (C6H12O6) dissolved in it. Calculate the concentration of solution A and B in the following concentration types:
Mass percent Molarity Molality
Tuesday, January 30, 2007
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Agenda FYI Preamble #2 Preamble #3 ID Handout Folders Salt Solubility Lab
Wednesday, January 31, 2007
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FYI’s Lab notebook 1/31
Wednesday Book Check 2/5 Monday Binder Check 2/5 Monday RLog 15 2/6 Tuesday
Wednesday, January 31, 2007
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Preamble #2 (ctnd) Now, assume that solution A started with a volume of 155mL and 13g of glucose (C6H12O6) dissolved in it. Calculate the concentration of solution A and B in the following concentration types:
Mass percent Molarity Molality
Wednesday, January 31, 2007
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Preamble #3 What are some of your ideas/knowledge
about solubility, dissolving, and solutions? What are some of your questions about those topics?
How do you think volume and temperature will relate to the solubility of salt?
Wednesday, January 31, 2007
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Salt Solubility Lab Add an entry to your table of contents
designating this lab. If you are reusing your notebook, draw
a thick line between semesters to help keep them separate
This lab will be completely in I saw/I thought
Wednesday, January 31, 2007
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Agenda FYI Salt Solubility Lab
Friday, February 2, 2007
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FYI’s Lab notebook 1/31 Wednesday Book Check 2/5 Monday Binder Check 2/5 Monday RLog 15 2/6 Tuesday Salt Solubility Lab 2/7 Wednesday
Friday, February 2, 2007
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Salt Solubility Lab Finish up your data collection and start the
data analysis You will need to finish the data analysis by
the start of class on Monday Monday we will share class data and your
team will have a chance to discuss the extension questions (will require some outside research)
Lab is due on Wednesday
Friday, February 2, 2007
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Agenda FYI Book Check Salt Solubility Lab Analysis
Monday, February 5, 2007
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FYI’s Book Check 2/5 Monday Binder Check 2/5
Monday RLog 15 2/6 Tuesday
or 2/7 Wednesday
Salt Solubility Lab 2/8 Thursday
Monday, February 5, 2007
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Lab Analysis Construct a whiteboard with your
team’s data in a data table and graph Include your determination of the best
fit line/curve for your data Also make a table of your molarities
Monday, February 5, 2007
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Agenda FYI Binders Back RLog 15 Due Dilutions Preamble 4
Tuesday, February 6, 2007
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FYI’s RLog 15 2/6 Tuesday
or 2/7 Wednesday
Salt Solubility Lab 2/8 Thursday
QP 15 (1-49 odd) 2/13 Tuesday RLog 16 2/20 Tuesday
Wednesday, February 7, 2007
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DilutionWhen you add water to a solution, you
dilute it (ALWAYS decreases concentration) M1V1 = M2V2
M = concentration
V = volume Tip: Make sure your volumes are correct
(may have to add volumes together for V2)
Wednesday, February 7, 2007
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Preamble 4 You need to make 535 mL of a sugar solution with
a concentration of 2.324 x 10 -3 M. However, you have solutions of various concentrations and volumes to start with. How much of each solution and water will you need to combine together? A) 1.1 L of 1M solution B) 300. mL of 2.2 x 10 -2 M solution C) 50. mL of 3M solution D) 66 mL of 1.32 x 10 -1 M solution
Wednesday, February 7, 2007
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Agenda FYI Preamble 4 Peer Review of Lab Preamble 5
Thursday, February 8, 2007
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FYI’s Salt Solubility Lab 2/8
Thursday QP 15 (1-49 odd) 2/13 Tuesday RLog 16 2/20 Tuesday
Thursday, February 8, 2007
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Peer Review On the next available page, write the name of the lab + Peer
Review at the top Space out the headings on the page
Procedure – clear, step by stepData collection – clear, all necessary data givenData Analysis – data table, graph, equation of line,
molaritiesGroup Analysis – data table/graph comparison between
sidesExtensions – 3 questions, check processConclusion – 3 paragraphs
Thursday, February 8, 2007
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Agenda FYI Preamble 5 Preamble 6
Friday, February 9, 2007
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FYI’s Salt Solubility Lab 2/12
Monday QP 15 (1-49 odd) 2/13 Tuesday Each person needs to bring a sample of
juice (at least a cup) on 2/13 Tuesday RLog 16 2/20 Tuesday
Friday, February 9, 2007
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Preamble 5 You mix 92g of a 23% by mass solution of Lead
(II) nitrate with 1.10L of a 2.00M solution of Potassium chloride. Your volume increases to 1.13L and a precipitate forms.
A. What is the balanced equation?B. What is the net ionic equation?C. What are the starting moles of the reactants?D. What is the limiting reagent?E. How much product will you make?F. What is the concentration of the remaining ions in the
solution?
Thursday, February 8, 2007
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Preamble 6 How would you make 1L of a 1.00 mg/mL solution
of Vitamin C (Ascorbic Acid = C6H8O6)?
Given the above solution, how would you make 100mL samples of the following concentrations: 0.8 mg/mL 0.7 mg/mL 0.6 mg/mL 0.5 mg/mL
0.4 mg/mL0.3 mg/mL0.2 mg/mL0.1 mg/mL
Friday, February 9, 2007
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Agenda FYI Preamble 6 Sailin’ the High C’s
Monday, February 12, 2007
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FYI’s Salt Solubility Lab 2/12
Monday QP 15 (1-49 odd) 2/13 Tuesday Each person needs to bring a sample of
juice (at least a cup) on 2/13 Tuesday RLog 16 2/20 Tuesday
Monday, February 12, 2007
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Preamble 6 How would you make 1L of a 1.00 mg/mL solution
of Vitamin C (Ascorbic Acid = C6H8O6)?
Given the above solution, how would you make 100mL samples of the following concentrations: 0.8 mg/mL 0.7 mg/mL 0.6 mg/mL 0.5 mg/mL
0.4 mg/mL0.3 mg/mL0.2 mg/mL0.1 mg/mL
Monday, February 12, 2007
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Sailin’ the High C’s Make a new entry in your table of
contents for the lab In your notebook, write out your I
saw/I thought for your background and procedure
Monday, February 12, 2007
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Agenda FYI Sailin’ the High C’s
Thursday, February 15, 2007
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FYI’s Sailin the High C’s TODAY RLog 16 2/20 Tuesday QP 16 (1-49 odd) 3/2 Friday Garden Project 3/5 Monday
(look online) RLog 10/14 3/12 Monday
Thursday, February 15, 2007
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Sailin’ the High C’s Finish up your Questions/Analysis
in I saw I thought Finish your Conclusion in
paragraph form
Monday, February 12, 2007
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Agenda FYI Preamble 7
Friday, February 16, 2007
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FYI’s RLog 16 2/20 Tuesday Quiz 2/23 Friday QP 16 (1-49 odd) 3/2 Friday Garden Project 3/5 Monday
(look online) RLog 10/14 3/12 Monday
Friday, February 16, 2007
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Preamble 7 10.0g of Silver nitrate is added to 55mL of a
1.1 x 10-2 M solution of sodium chloride. A product forms and volume increases to 62mL.
A) write the balanced equation
B) calculate the moles of reactants
C) find the limiting reagent D) find the mass of product formed
E) find the concentration of the remaining ions
Friday, February 16, 2007