You Did It!

Thanks for a great year, guys! I hope while you're studying, you'll realize just how much you've learned this year, and feel proud of yourself! Study hard for the final and end the year on a high note!

Please be checking your email with updates about your acid, base quizzes, study tips and more. I've sent you a Google Survey - please fill it out when you have time.

If you'd like to keep in touch with me next year, you can email me at mstanzman@gmail.com.

Hope to see many of you at the upcoming review sessions.

Tuesday, May 31

Section 5: Complete your acid/base packet and study. Answer keys can be found under homework docs.

Friday, May 27

Sections 2H & 4: Complete your acid/base packet and study. Answer keys can be found under homework docs. Enjoy your 3 day weekend!

p.s. start studying for the final! go over old test and quizzes!!!

Thursday, May 26

Sections 2H & 5: Read chapter 15, section 1 of your textbook. Then, answer section review questions 1-5 on page 509. 

Wednesday, May 25

Section 4: Read chapter 15, section 1 of your textbook. Then, answer section review questions 1-5 on page 509. 

Section 5: Answer the questions below in your notebook. Please note that I have given some sample answers. Also, here's a video on acid/base naming, if you found our last homework confusing: Naming Acids and Bases, Chemistry Tutorial CLEAR & SIMPLE

Given the following reactions label the acid, base, conjugate acid and conjugate base.

a. HCO₃^-       +          H₂O     →        H₃O⁺   +          CO₃^2-

b. HCl                  +          H₂O     →        H₃O⁺   +          Cl^-

c. CH₃CO₂H        +          NaOH →        NaCH₃CO₂     +          H₂O

d. NH₄Cl            +          NaH₂PO₄         →        NH₃     +          H₃PO₄ +         NaCl

Name the following acids and bases:

1)         NaOH 

2)         H2SO3 

3)         H2S 

4)         H3PO4 

5)         NH3       

6)         HCN    

7)         Ca(OH)2 

8)         Fe(OH)3  

9)         H3P      

Write the formulas of the following acids and bases:

10)       hydrofluoric acid

11)       hydroselenic acid 

12)       carbonic acid 

13)       lithium hydroxide 

14)       nitrous acid

15)       cobalt (II) hydroxide

16)       sulfuric acid   

17)       beryllium hydroxide

18)       hydrobromic acid

Tuesday, May 24

Sections 2H & 4: Answer the questions below in your notebook. Please note that I have given some sample answers. Also, here's a video on acid/base naming, if you found our last homework confusing: Naming Acids and Bases, Chemistry Tutorial CLEAR & SIMPLE

Given the following reactions label the acid, base, conjugate acid and conjugate base.

a. HCO₃^-       +          H₂O     →        H₃O⁺   +          CO₃^2-

b. HCl                  +          H₂O     →        H₃O⁺   +          Cl^-

c. CH₃CO₂H        +          NaOH →        NaCH₃CO₂     +          H₂O

d. NH₄Cl            +          NaH₂PO₄         →        NH₃     +          H₃PO₄ +          NaCl

Name the following acids and bases:

1)         NaOH 

2)         H2SO3 

3)         H2S 

4)         H3PO4 

5)         NH3       

6)         HCN    

7)         Ca(OH)2 

8)         Fe(OH)3  

9)         H3P      

Write the formulas of the following acids and bases:

10)       hydrofluoric acid

11)       hydroselenic acid 

12)       carbonic acid 

13)       lithium hydroxide 

14)       nitrous acid

15)       cobalt (II) hydroxide

16)       sulfuric acid   

17)       beryllium hydroxide

18)       hydrobromic acid

Monday, May 24

Section 5: Use your textbook (ch. 14) and the resources at the bottom of this webpage to help you answer the following in your notebook:

1) Explain the difference between a strong acid and a weak acid. Do the same for bases. Give examples.

2) Acid-Base Theories

Theory:

Definition: 

Example:

Theory:

Definition:

Example:

Theory:

Definition:

Example:

3) Acid-Base Nomenclature

The three steps for naming a binary acid are:

            1)

            2)

            3)

  

Practice:

H₂S

HF

HI

The following is an example of what kind of acid? H₃PO₄

Friday, May 20

Section 2H & 4: Use your textbook (ch. 14) and the resources at the bottom of this webpage to help you answer the following in your notebook:

1) Explain the difference between a strong acid and a weak acid. Do the same for bases. Give examples.

2) Acid-Base Theories

Theory:

Definition: 

Example:

Theory:

Definition:

Example:

Theory:

Definition:

Example:

3) Acid-Base Nomenclature

The three steps for naming a binary acid are:

            1)

            2)

            3)

  

Practice:

H₂S

HF

HI

The following is an example of what kind of acid? H₃PO₄

Thursday, May 19

Sections 2H & 5: Watch this video before our next class: Acid - Base Intro

Wednesday, May 18

Section 5: Answer the questions below and study for your solutions quiz.

1) If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be?

2) If I add water to 100 mL of a 0.15 M NaOH solution until the final volume is 150 mL, what will the molarity of the diluted solution be?

3) How much 0.05 M HCl solution can be made by diluting 250 mL of 10 M HCl?

4) I have 345 mL of a 1.5 M NaCl solution. If I boil the water until the volume of the solution is 250 mL, what will the molarity of the solution be?

5) How much water would I need to add to 500 mL of a 2.4 M KCl solution to make a 1.0 M solution?

Section 4: Watch this video before our next class: Acid - Base Intro

Tuesday, May 17

Section 4: Answer the questions below and study for your solutions quiz.

1) If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be?

2) If I add water to 100 mL of a 0.15 M NaOH solution until the final volume is 150 mL, what will the molarity of the diluted solution be?

3) How much 0.05 M HCl solution can be made by diluting 250 mL of 10 M HCl?

4) I have 345 mL of a 1.5 M NaCl solution. If I boil the water until the volume of the solution is 250 mL, what will the molarity of the solution be?

5) How much water would I need to add to 500 mL of a 2.4 M KCl solution to make a 1.0 M solution?

Monday, May 16

Sections 2H & 5: Answer the following questions in your notebook.

Molarity = moles of solute/L of solution

1. What does molarity mean?

2. What is the molarity of a solution that contains 4.53 moles of lithium nitrate in 2.85 liters of solution?

3. What is the molarity of a solution that contains 0.00372 moles hydrochloric acid in 2.39 x 10-2 liters of solution?

4. A flask contains 85.5 g C₁₂H₂₂O₁₁ (sucrose) in 1.00 liters of solution. What is the molarity?

5. A beaker contains 214.2 grams osmium (III) fluoride in 0.0673 liters of solution. What is the molarity?

6. Calculate the molarity if a flask contains 1.54 moles potassium sulfate in 125 ml of solution.

7. A chalice contains 36.45 grams ammonium chlorite in 2.36 liters of solution - calculate the molarity.

**** SOLUTIONS QUIZ ALERT:

Section 4 - Wednesday

Sections 2H & 5 - Thursday

Thursday, May 12

Section 2H: If you were not in class today, you must stop by tomorrow during CP for a few minutes to collect your chromatography lab data. You will complete the lab over the weekend. 

Section 4: Finish your lab and answer the following questions in your notebook. You should use the equation we used at the end of class (also, never forget about your textbook - we're in chapter 12!):

Molarity = moles of solute/L of solution 

1.      What does molarity mean? 

2.      What is the molarity of a solution that contains 4.53 moles of lithium nitrate in 2.85 liters of solution?

3.      What is the molarity of a solution that contains 0.00372 moles hydrochloric acid in 2.39 x 10^-2 liters of solution?

4.      A flask contains 85.5 g C₁₂H₂₂O₁₁ (sucrose) in 1.00 liters of solution.  What is the molarity?

5.      A beaker contains 214.2 grams osmium (III) fluoride in 0.0673 liters of solution.  What is the molarity?

6.      Calculate the molarity if a flask contains 1.54 moles potassium sulfate in 125 ml of solution.

7.      A chalice contains 36.45 grams ammonium chlorite in 2.36 liters of solution - calculate the molarity.

Wednesday, May 11

Sections 5: Use the Salts & Solubility phet simulation (link found here) to complete the FIRST PAGE ONLY of the worksheet posted under homework docs.

Also, answer the following two questions in your notebook:

1) On the solubility curve, for most substances, as temperature increases, solubility increases. Why do you think this happens?

2) Two of the curves trend in the opposite direction, these substances are gases. Why do you think gas solubility decreases when temperature increases?

Tuesday, May 10

Sections 2H & 4: Use the Salts & Solubility phet simulation (link found here) to complete the FIRST PAGE ONLY of the worksheet posted under homework docs.

Monday, May 9

Sections 2H & 5: Watch this video: Solubility Curves, and then answer the questions on the solubility curves worksheet you got at the end of class. If you're confused, don't worry, work in pencil - we will go over everything next class

Friday, May 6

Section 4: Watch this video: Solubility Curves, and then answer the questions on the solubility curves worksheet you got at the end of class. If you're confused, don't worry, work in pencil - we will go over everything next class.

Section 5: Based on your textbook reading and the notes we took in class today, answer the following questions:

1) What’s the difference between a solution, a suspension, and a colloid? Give examples of each.

2) What does “like dissolve like” mean?

3) Why don’t oil and vinegar mix? You should discuss this in terms of what happens at a molecular level.

4) Make a drawing of the particles in an NaCl solution to show why this solution conducts electricity. Then, make a drawing of a sugar solution to show why this solution does NOT conduct electricity.

5) Do you expect a packet of sugar to dissolve fast in hot tea or in cold tea? Why?

6) If a warm bottle of soda and a cold bottle of soda are left open, which will go flat first? Why?

7) You are eating pasta with olive oil and you accidentally get some oil on your shirt. What would be the best way to get the stain out? Should you just blot it with water? Why or why not?

Thursday, May 5

Sections 2H & 4: Based on your textbook reading and the notes we took in class today, answer the following questions:

1) What’s the difference between a solution, a suspension, and a colloid? Give examples of each.

2) What does “like dissolve like” mean?

3) Why don’t oil and vinegar mix? You should discuss this in terms of what happens at a molecular level.

4) Make a drawing of the particles in an NaCl solution to show why this solution conducts electricity. Then, make a drawing of a sugar solution to show why this solution does NOT conduct electricity.

5) Do you expect a packet of sugar to dissolve fast in hot tea or in cold tea? Why?

6) If a warm bottle of soda and a cold bottle of soda are left open, which will go flat first? Why?

7) You are eating pasta with olive oil and you accidentally get some oil on your shirt. What would be the best way to get the stain out? Should you just blot it with water? Why or why not?

Wednesday, May 4

All Sections: Complete the Chapter 12 introduction worksheet under 'homework documents'. You must use your textbook (ch 12) for this assignment. You DO NOT need to print out the worksheet - you are welcome to write all the definitions and your answers in your notebook.

Tuesday, May 3

Section 5: Study! Don't forget what a useful tool your textbook is for answering gas law questions (ch. 11)!

Remember: Extra credit work is due in class tomorrow.

Friday, April 29

Section 5: Complete the first two pages of the green gas laws packet you got in class today. Your Gas Laws quiz will be on Wednesday of next week.


Fourth Quarter Extra Credit Opportunity for All Sections!
By Wednesday, on a piece of loose leaf, do the following:
1) Briefly explain how a barometer works, in your own words (you may draw pictures, if you'd like)
2) List materials you would use from around the house to create your own barometer (be creative! I've seen the coffee can + balloon + straw set up more times than I can count - I won't be very impressed. Feel free to take an existing design and put your own spin on it!)
3) Draw a sketch of your barometer being sure to label all of the materials
4) Describe the aspects of your set up that your think will work well and those that could be improved. Make sure to include explanations of these inferences!
5) For double bonus points - build it! You can take a picture of it OR bring it in!

Thursday, April 28

Section 4: Complete the first two pages of the green gas laws packet you got in class today. Your Gas Laws quiz will be on Tuesday of next week.

Section 2H: 
1) Poster boards are due to 4K3 by homeroom tomorrow. I'll be in by 7:30, if you need to make any last minute adjustments.
2) As per your request, you will be watching videos and taking note on the ideal gas law this evening:
Ideal Gas Law Introduction
Ideal Gas Law Practice Problems
3) Answer the following questions:

Your Gas Laws quiz will be on Wednesday of next week.


Fourth Quarter Extra Credit Opportunity for All Sections!
By Wednesday, on a piece of loose leaf, do the following:
1) Briefly explain how a barometer works, in your own words (you may draw pictures, if you'd like)
2) List materials you would use from around the house to create your own barometer (be creative! I've seen the coffee can + balloon + straw set up more times than I can count - I won't be very impressed. Feel free to take an existing design and put your own spin on it!)
3) Draw a sketch of your barometer being sure to label all of the materials
4) Describe the aspects of your set up that your think will work well and those that could be improved. Make sure to include explanations of these inferences!
5) For double bonus points - build it! You can take a picture of it OR bring it in!

Wednesday, April 27

Section 2H & 5: Complete the worksheet you got at the end of class today. If you're having trouble figuring out which gas law to use, come to Academic Enrichment on Friday!

Section 2H: Don't forget to bring all your materials to complete your project board to class tomorrow!

Tuesday, April 26

Section 4: Complete the worksheet you got at the end of class today. If you're having trouble figuring out which gas law to use, come to Academic Enrichment tomorrow! 

Section 5:
Watch and take notes on these videos:
Gas Laws Part 1
Gas Laws Part 2

Monday, April 25

Section 4:
1) On a piece of loose-leaf, explain how you crushed the can in class today (don't forget what you know about pressure, temperature, volume, energy, kinetic molecular theory, etc and use the documents under homework docs). Feel free to draw pictures to get your point across. Reminder: the can had very hot water inside, the pan had very cold water, which got sucked up into the can while it was getting crushed!
2) watch and take notes on these videos:
Gas Laws Part 1
Gas Laws Part 2

Section 2H: 
Watch and take notes on these videos:
Gas Laws Part 1
Gas Laws Part 2

Thursday, April 21

Section 5:  

1) On a piece of loose-leaf, explain how I crushed the can in class today (don't forget what you know about pressure, temperature, volume, energy, kinetic molecular theory, etc and use the documents under homework docs). Feel free to draw pictures to get your point across. Reminder: the can had very hot water inside, the pan had very cold water, which got sucked up into the can while it was getting crushed!

2) Complete the yellow gas properties packet by next class (be sure to bring it with you to class tomorrow!)

Section 4: Complete the yellow gas properties packet by next class. 

Wednesday, April 20

Section 4: Complete both sides of the worksheet (phase diagram and vapor pressure graph) you got in class today.

Section 2H: For Monday the 25th:
1) Complete the yellow gas properties packet using the Phet simulation link provided.
2) Complete steps 1-7 of your Ecological Footprint Project (green sheet - you should have already done steps 1-3!)

Tuesday, April 19

Section 5: Complete the phase diagram worksheet you got in class today. Also, STUDY both the phase diagram and the phase change graph, which was learned about last week. Use the resources at the bottom of the webpage to help you!

Friday, April 15

Section 2H: 
1) On a piece of loose-leaf, explain how you crushed the can in class today (don't forget what you know about pressure, temperature, volume, energy, kinetic molecular theory, etc and use the documents under homework docs!). Feel free to draw pictures to get your point across!
2) Review ALL of the information in the document 'Changes of State, Vapor Pressure & Phase Diagrams' under homework docs.
3) Study for a quiz on: phase change graphs, phase diagrams, vapor pressure graphs and all of the words and terms you have defined in your notebooks.
4) Finally, over the weekend, take the following quiz. You must print or take a screen shot of your results and bring them to next class! http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/

Section 4:
1) Tonight we will look at a Phase Diagram. First, you need to define the follow words (use your textbook or one of the articles under homework docs!):
1. Triple Point
2. Critical Point
3. Critical Temperature
4. Critical Pressure
Next, there are two videos on the phase diagrams below, and a great explanation in your textbook on page 347. The videos have the same content - I just put two because they are different styles of video - you only need to watch one (you can watch both if you'd like).
Phase Diagram Video 1
Phase Diagram Video 2

Use these videos and the textbook content to answer the phase diagram questions on the back of the worksheet we started in class today (can also be found under homework docs).

2) Review/take notes on ALL of the information in the document 'Changes of State, Vapor Pressure & Phase Diagrams' under homework docs.

Kairos Students: Read, take notes and complete all worksheets found under 'homework docs'. You may also want to also consult your textbook (chapter 10) and the videos posted above. Welcome back!

Thursday, April 14

Sections 2H & 5: Tonight we will look at a Phase Diagram. First, you need to define the follow words (use your textbook or one of the articles under homework docs!):

1. Triple Point
2. Critical Point
3. Critical Temperature
4. Critical Pressure

Next, there are two videos on the phase diagrams below, and a great explanation in your textbook on page 347. The videos have the same content - I just put two because they are different styles of video - you only need to watch one (you can watch both if you'd like).
Phase Diagram Video 1
Phase Diagram Video 2

Use these videos and the textbook content to answer the phase diagram questions on the back of the worksheet we started in class today (can also be found under homework docs). 

Wednesday, April 13

All Sections: Read and take notes on pages 90-91 of the article under 'Homework Documents'. Then, use what you've read to complete the back-side of the Venn diagram worksheet.

Tuesday, April 12

Section 4: First, use the ppt or your textbook to add to complete your Venn diagram. Then, read the first two pages (88-89) of the document under 'Homework Documents'. After reading, answer the following in your notebook:
1) Use your own words or draw a diagram (or both) to explain why phase changes occur.
2) Why do different substances melt at different temperatures?
3) What is boiling?
4) What is heat of vaporization?
5) Based on context clues, how would you define heat of fusion in your own words?
6) Why heat of vaporization greater than heat of fusion in pure substances?

Monday, April 11

Section 2H: First, use the ppt or your textbook to add to your 'solids' section of your Venn diagram. Then, read the first two pages (88-89) of the document under 'Homework Documents'. After reading, answer the following in your notebook:
1) Use your own words or draw a diagram (or both) to explain why phase changes occur.
2) Why do different substances melt at different temperatures?
3) What is boiling and how do you think it's similar and different than evaporation?
4) What is heat of vaporization?
5) Based on context clues, how would you define heat of fusion in your own words?
6) Why heat of vaporization greater than heat of fusion in pure substances?

Section 5: First, use the ppt or your textbook to add to your 'liquids' & 'solids' section of your Venn diagram. Then, read the first two pages (88-89) of the document under 'Homework Documents'. After reading, answer the following in your notebook:
1) Use your own words or draw a diagram (or both) to explain why phase changes occur.
2) Why do different substances melt at different temperatures?
3) What is boiling?
4) What is heat of vaporization?
5) Based on context clues, how would you define heat of fusion in your own words?
6) Why heat of vaporization greater than heat of fusion in pure substances?

Wednesday, April 6

Sections 5: For next class:

• Complete your heating and cooling curve graph (see conclusions section for more information). You can use pencil and paper, excel or another graphing service, including the Logger Pro, which I have in the classroom. If you want to complete your graph during CP in 4K3, you are welcome to. 
• In your notebook you are going to define the words below. We are starting Chapter 10 - States of Matter, if you use headings in your notebook. You should get these definitions from your textbook!
• pure substance
• phase change
• heating/cooling curve
• kinetic energy
• potential energy
• exothermic
• endothermic
• freezing point
• melting point
• temperature
• Don't forget to keep studying your stoichiometry! 

Tuesday, April 5

Sections 2H & 4: For next class:

• Complete your heating and cooling curve graph (see conclusions section for more information). You can use pencil and paper, excel or another graphing service, including the Logger Pro, which I have in the classroom. If you want to complete your graph during CP in 4K3, you are welcome to. 
• In your notebook you are going to define the words below. We are starting Chapter 10 - States of Matter, if you use headings in your notebook. You should get these definitions from your textbook!
• pure substance
• phase change
• heating/cooling curve
• kinetic energy
• potential energy
• exothermic
• endothermic
• freezing point
• melting point
• temperature
• Don't forget to keep studying your stoichiometry! 

Wednesday, March 23

Section 5: Tonight you will continue your work on limiting reagents. You will complete the worksheet under Homework Documents (the second page is the answers, so you can see how you're doing...yessssssssss!). Below are links to some videos and an image to help you:

Introduction to Limiting Reactant and Excess Reactant

Limiting Reactant Practice Problem

Don't forget!: We will have a test on all four problem types AND limiting reactants when we return from break (not the first class back). Start studying NOW! I will not re-teach material when we return from vacation.

Gram to Gram conversion answers:

Have a great break!!