Lezlie Haynes

Welcome to Chemistry!  My name is Lezlie Haynes and I am the instructor.

5/10–In class–students watched their final apologetics video with me…it was a speech by Dr. Georgia Purdom encouraging them to be bold and speak the truth as they graduate high school and move into the next phase of their lives.

Hwk–summary of what they have learned in chemistry, what they have learned in their time at tutorial, what they would do differently, what classes they wish they could have taken and a general statement of what their experience at tutorial has taught them or how it has prepared them for the next step.  Study for FE.
Next Tuesday, 8 am – 8:25 am, I will work problems like those on their exam.  Any student that wants some more review is welcome.
Lastly, there are 64 MC questions on the test (this includes problems).  If your child would like more points to be possible on the exam, he or she can come early Thursday morning, no earlier than 7:50 am, and work Part II of the exam, which consists of problems.  They should have the honors formulas on their notecard, too, just in case.
For the exam, bring your:
ion sheet, Oxidation Rules handout, notecard with formulas and stuff we talked about today (no extra words, etc), activity series handout (might need).  I will give you a periodic table to use.

5/3–In class–we finished mod 13 info then performed Exp 13.1.  Students are to complete the lab in their student notebook and write a fully formed conclusion.  Don’t forget to include % error in the conclusion.  Students should show their calculations in each section.  No work = pts taken off the grade.

Hwk–follow the agenda and study the quizlet, your notes and problems for final exam in 2 weeks.

4/26–In class- students took the a quiz over heat then we started Mod 13. We first reviewed how to do Lewis structures.  I gave students multiple handouts today to help them with the content.  Then, we worked problems the rest of class.

Reminder:  Steps to Finding Delta H of a Reaction Using Bond Energies:
  1. Make Lewis Structures for each molecule in the chem equation (I gave you a handout)
  2. Under each molecule, list the different types of bonds formed.  EX:  C-H bond, or S-O bond
  3. Next to each type of bond, state how many of this type of bond the molecule has
  4. Look up the Bond Energy on the handout I gave you EX: C-H bond has 413 kJ/mol
  5. Do the math:  Delta H = Bond Energy of Reactants – Bond Energy of Products
    1. make sure that EVERY product gets subtracted
    2. For each molecule:  # types of bonds * # moles from chem equation * Bond Energy from table
    3. I attached an example worked out.  If you do not know where I got a number, text me.  I double checked everything but you never know.
Make sure you know or can do the following:
  • Find the Delta H of a chem reaction using bond energies
  • Endothermic reactions
    • Delta H is positive
    • Energy is written as a reactant
    • container feels cold
  • Exothermic reactions
    • Delta H is negative
    • Energy is written as a product
    • container feels hot
Hwk–follow the agenda.  I strongly suggest completing the handout I gave you (I gave you a key) but it is not due for homework.  Please make sure you are studying for the final exam. Waiting until a few days before will not result in a good grade.

4/19-Before Class–I reviewed how to determine oxidation numbers for redox reactions.

In Class–we went over several heat problems.  Then performed experiment in class.  This is one of my favorites that we do.  Hwk is to follow the agenda and write lab report.
Changes to the lab:
Instead of finding the specific heat, c, of one metal, we found the specific heat of four different metals.  Students are to calculate the specific heat of each metal using the data from the lab.  Then, they are to look up the specific heats of each metal in a table (use Google with parents permission) and record in lab book.  Next, they are to calculate their percent error using the formula on the board in class and record in lab book.  Lastly, they should write their fully formed conclusion in the lab book.
Remember:
  • you get to ignore the calorimeter in this lab
  • heat gained by the water is q = mc(Tfinal – Tinitial), c of water is 4.184 J/gC, mass is your mass of water, initial temperature is the temp of the water before adding the metal and final temperature is the max temp the water reached after adding the metal.
  • heat lost by the metal is = to the heat gained by the metal, just with a negative sign.  -q = mc(Tfinal – Tinitial) where q is the heat from the water, m is the mass of the metal, c is the unknown you are trying to determine, temp final is the same as temp final from the heat gained by water
  • if you didn’t write down the percent error formula on the whiteboard, Google it.  Theoretical value is the one you have to look up in a table.  Experimental value is the one you calculate in lab using your data.

4/12–Gas Law Quiz–for those students that failed the quiz, you have the opportunity to correct each problem and turn the new work in to Ms. Kim next week.

In class–students took the redox quiz and turned in Redox Wkst #2, then I lectured over energy, work, potential and kinetic energy, heat and then we worked heat problems. Hwk is to follow the agenda–please read the calorimetry lab at the end of the chapter for next week. Important–students were allowed to use a notecard and 3 notes sheets on their quiz today.

4/5–today was a busy day.  At the beginning of class, students turned in their wkst 1. Then, I went over how to balance a redox reaction.  I worked about 4 of the big problems then had Ms Kim make copies of my notes so students could have them. After that, students completed a microchem lab on redox reactions.  Hwk is to follow the agenda.  Since we did a different lab from the one listed on the agenda, complete microchem lab handout and turn in next week.  Remember, I added that you were to write the complete redox reactions for each trial.  I will use Liv’s handout and make a sample so you know what to do.

3/29–Congratulations to our Middle TN Science and Engineering Regional Fair winners:  Moses (3rd), Cheyanne (HM), Daniel (3rd, 2 additional awards), Josiah (2nd, 2 additional awards), Olivia (1st, 2 additional awards), Katie (HM, 2 additional awards), Bella (Broadcom award).

Hwk–follow the agenda.

3/22:  In class–students turned in Mod 11 Wkst then performed 2 experiments in class on gas laws: Exp 11.2 & Boyle’s Law.  Hwk is to follow the agenda. Study for your quiz next week over Mod 12.  There is some MC over the notes sheet (make sure you know STP and conditions for ideal gas) and then there are many problems.  Bring your calculator for sure. If you think you will need more time, you may come in early and begin at 8:10 am.  We will take 30ish minutes to take the test in class then we move on to Mod 16.
 Complete Exp 11.2 in the student notebook (we went over how and what to do for each calculation), atmospheric pressure today was 1.02 atm, class average temperature was 23 degrees celsius which makes vapor pressure of water 21.1 torr (must covert to atm by dividing by 760).  For the final answer you will take moles of carbon dioxide and convert to grams of vinegar (acetic acid) using your tgrid.  Then write a good conclusion.
Boyle’s Law–fill in the table by following the directions underneath it, create a graph of pressure and volume, then answer the bold questions (I think there were 3 or 4 on the front page of the lab handout, right hand side).
For 3/22–Be prepared to turn in Mod 11 Wkst.  We will complete 2 labs in class.  It would help if you have read over and are prepared to complete Exp 11.2 in student notebook. Good news–the mod 11 quiz is 3/29 not this week.  So, if you need help with gas law problems, you need to come in for free tutoring before Tutorial with our honor students.  Ms. Kim will work on grading your worksheets, but we will send you home with an answer key so you can study for your quiz.
3/1–Today was a great day!  Students performed 1 mini lab on Boyle’s law, then watched and took notes on 2 in class demos over Charles’ Law and Guy-Lussac’s Law.  I handed out a worksheet that is due when we get back from Spring Break, students took the back side of a take home quiz (effort for that side of the quiz) and then took the quiz home to complete (open book), handout out the mini-lab/demos notes sheet and lectured over about 1/2 of Mod 11.  Hwk is to follow the agenda and complete the quiz.
2/22–in class, students were given their quiz to complete at home, turned in hwk and completed a lab on solubility and temperature.  Hwk is to complete the lab handout, write their report ( Data/Results Table Handout, graph of actual and experimental solubilities and conclusion) and follow the agenda.
There is a quiz next week that has molality problems, freezing point depression, boiling point elevation, and solubility curve questions.  The solubility portion of the quiz will be completed in class and turned in for a grade.  Then, Ms Kim will hand back the quiz and the remainder will be take home and open book–this will help with the molality, freezing point and boiling point questions. Due next week:  lab report and solubility worksheet.
Lab Report–we discussed this in class and what to turn in is listed on the handout.  I am attaching the instructions to this lab so that students can reference it, if needed, to complete the data/results and conclusion.  Students need only turn in the completed Data/Results handout, Solubility curves graphed by hand for their experimental data and for the accepted data, and a fully formed conclusion.  The conclusion should restate purpose, hypothesis, right or wrong, why they got a particular result, address errors, compare the accepted curve to their experimental curve, discuss what they learned and how it relates to the module.  The two graphs should be on the same x-y grid.
If you need help, I will be at Tutorial early Tuesday morning as will at least one tutor.

2/15–today was a good day. Thanks for dressing up for the photographer.  In class we covered most of the content of Mod 10, observed a demo, watched a video on supersaturation then worked solution problems involving tgrids and Molarity.  I handed out a worksheet on solubility and gave the quiz as a take home.  We also watched 2 videos about our St Jude’s fundraiser and listened to Ms. Ellen talk about this wonderful opportunity for our students.  Hwk is to follow the agenda and complete the quiz.

2/8–Class went way too fast.  I know you guys probably developed cramps in your hand while trying to write what was on the overhead.  I have a handout that you can come by and get Tuesday or Thursday that is over the problems we worked in class.  The handout consists of practice problems that I have worked out by hand so if you can’t read something, text or email me.

We reviewed Molarity problems and dilution problems.  Then I introduced Titrations.  After that, students performed MC 12:  A Microscale Titration.  I am going to send a separate email that walks students thru what they did in the lab and how to finish the calculations.  Homework is to follow the agenda–when it says finish lab reports it means finish filling out the lab handout. We only did MC 12, so no lab report for MC 13.  Don’t forget to work Extra Practice Problems 1 – 9 for Mod 9.  They are located in the back of the textbook–they may even be in the student notebook.  You will turn these 9 problems into Ms. Kim on Thursday.  Study for your quiz on Molarity and dilutions.  YOU MAY MAKE A NOTE CARD TO USE THAT INCLUDES BOTH FORMULAS AND YOU MAY INCLUDE ONE DILUTION EXAMPLE ON THE NOTE CARD.
 
Honors students–1st six weeks notebook check is due on Thursday (technically 2/8 was the last day in the six weeks).  I will email you the notebook check separately.  Also, you have research projects due in February.  They must be chemistry related.  If you need ideas, see me after/before class.

2/7–Olivia has been reminding me daily that #4 on the quiz needs help.  So, omit number #4 on the quiz and replace it with this new and improved #4.

4.       FeS2 + O2 àFe2O3 + SO2

How many grams of sulfur dioxide are formed when 26.62 grams of FeS2 and 5.44 grams of oxygen react? ((THE REACTION IS NOT BALANCED)

                a) Determine the Limiting Reactant

                b) Determine the Excess Reactant

                c) Determine the grams of sulfur dioxide produced

2/1–In class, we followed the agenda and worked concentration problems, dilution problems and neutralization problems. Hwk is to follow agenda, complete quiz, complete Exp 9.2., work on Extra Practice Problems 1 – 9 (due 2/15), study for first acid quiz.

1/25–In class, we reviewed empirical formulas, molecular formulas and percent composition.  Then we began our study of acids and bases.  Please click the link(s) below and print the notes.  Hwk is to follow the agenda.  We did not do lab so no lab report due.

Acid-Base Notes

1/18–Class cancelled due to weather.**Updated

  • I have added 3 videos to the bottom of this page.  They cover the content that we would have covered in class.  Please respect my privacy and do not download, share or do anything disrespectful with the video or images within.  Important: sometimes you have to let the video format before you can watch.  This may take a few minutes.  Be patient.
  • Watch the videos, take notes, review the Stoichiometry notes over this content
  • Check your email for the Stoichiometry Quiz A, and one worksheet over this content
  • Due next week:
    • Student Notebook Exp 8.1, Stoichiometry Wkst B (Limiting Reactant), Science Fair project (for those doing it), Stoichiometry Quiz A
  • Hwk:  follow the agenda plus complete the Stoichiometry Quiz A

 

1/11–In class–we went over limiting reactant problems (I worked several on the overhead, handed out a worksheet for homework that included complete answer key and there are some on the Stoichiometry notes sheet).  After taking notes and working problems, students performed Exp 8.1 and shared results.

Hwk–follow agenda for hwk and complete lab report in student notebook.  Make sure you read the next page and a half following the lab to help with your conclusion.  For those of you doing science fair, it is due 1/25 if competing at FAITH fair and no later than 2/6 (with all forms) for Belmont fair only.
Honors students–you need to get me your dates for tutoring and, if not doing science fair, begin to look into ideas for your research project with experimentation.
Tutoring–we have at least 1 honors student that will be at Tutorial next Thursday morning at 8 am to help with chem hwk.  This is free so you should definitely show up to get extra help.

1/4–Today was a good day in chemistry. In class, students learned about stoichiometry.  I went over the concept then worked multiple problems.  After that, students worked problems on WKST A (they have a key to check their work).  Hwk is to follow the agenda.  Make sure the practice problems and OYO’s in the book get worked and checked.

Spring 2018 Agenda

Science Courses policy

STUDENT PROFILE

Honors Letter

Stoichiometry Notes

Honors-Letter of Intent

Lab Safety Handout

How to Write a Lab Report

For those interested in the Science Fair or the Honors option which requires a research plan with experimentation:

Sample Project

Research Plan In Detail Instructions

Science Fair Report Handout 17 18

Science Fair Dates

How to Write an Abstract

Welcome to Chemistry!

“This course is designed to be a first-year high school chemistry course and gives the student a rigorous foundation in chemistry, in order to prepare him or her for a college-level course.” Apologia website

Organization is very important and students are required to keep a binder with sections for notes, quizzes/tests, and worksheets. Students should bring their textbook, student notebook, binder, calculator and pencils to every class.

This course has been formatted a little differently from previous Tutorial science classes. I have organized the content into units. Each unit will begin with lecture and a handout that covers the important concepts. For units with math content, multiple examples will be provided. Students will complete the On Your Owns in the textbook as well as Review Questions and Practice Problems. Additional worksheets will be assigned to reinforce difficult concepts or provide additional in-depth practice. Students will be quizzed multiple times per unit and quiz dates will be listed on the agenda. Multiple experiments will be performed that will enhance student understanding of chemistry concepts.  Comprehensive final exams will be administered at the end of the fall and spring semesters.

This course has additional content added to enhance the content in the textbook.  Serious thought and planning has gone into deciding what content to add and why. All added content will better prepare the student for college level chemistry.

I look forward to seeing each student in the Fall!

Ms Lezlie

1/18 Videos

  Video #1

  Video #2

  Video #3

If you have any questions about chemistry, please email the instructor at lezlie@43llc.com.