This is the Blog for my 20-week Chemistry Class for the two-quarter, spring block class during the 2015-16 school year at George Washington High School.

6-15-16: 5 gallon ethanol rocket car demo and the floating basketball.

6-13-16: As the course work is complete, I will not be entering daily blog entries from this point on. However, I will continue lessons related to the curriculum or other fun science stuff.

6-9-16: Students took their final exam.

6-8-16: Same as 6-7, Final exam is tomorrow.

6-7-16: At this time, students should prepare for the final exam by organizing their notes, transcribing them to a five page reference sheet that can be used on the exam, and review the course key terms. I began showing "Home" (2009), and handed out a worksheet students can complete for extra credit. We will be watching the video over several days.

6-6-16: We reviewed the word problems from the homework sheet (balancing and classification). At this time, students should prepare for the final exam by organizing their notes, transcribing them to a five page reference sheet that can be used on the exam, and review the course key terms. Students also saw the reversible synthesis of carbonic acid (and got a chance to taste soda water)!

6-3-16: We reviewed HW and saw two demonstrations: the decomposition of hydrogen peroxide, "Elephants Toothpaste"; and the single displacement of copper with silver nitrate, "Silver Dendrites".

6-2-16: A substitute covered my class today because I was a the LEAD 2016 conference at district headquarters. Students received a list of topics covered by the course and a list of teaching standards. Students were asked to write a and submit a response to one of the standards as if it was a constructed response prompt.

6-1-6: We continued with balancing equations that included the "Polyatomic Ions as a Group" method discussed on page 273. For HW students (Due Friday) are to classify all the reactions on balancing equations worksheet distributed 5/26 and balance any 5 of the 15 equations on the equation side of the sheet.

5-31-16: We continued to learn to balance equations solving the problems on page 269 and 271. We left off with the method discussed on P 273.

5-27-16: We continued to learn how to balance and classify reactions.

5-26-16: We discussed balancing equations. Students received a worksheet with 15 word equations and 15 chemical equations for practice with balancing and classifying. We saw the decomposition of water and tests for hydrogen and oxygen.

5-25-16: We learned how to write a chemical reaction equation including the states of matter and energy balances for endo and exothermic reactions. We saw the endothermic reaction of Vinegar and Baking Soda and the exothermic reaction of sugar and potassium chlorate (The Gummy Bear Torture!!!). Students are to complete CRWS 8.1 and CRWS 8.2 #1-3. For HW students are also to research and write the reaction equation for the gummy bear torture.

5-24-16: Students took the chapter 6 test and received a reference pack for chapter 8. We spoke about chemical change and chemical reactions classification.

5-23-16: Last day of short schedule. We continued watching History Channels "Life After People". Here is a link that covers the original 2 hour shows the episode in segments:

5-19 and 20-16: We continued the History Channel's original 2 hour video "Life after People" to about 25 years out.

5-18-16: We continued the History Channel's original 2 hour video "Life after People" up to the fate of dogs.

5-17-16: We watched a few science videos: "What if the world went vegetarian?", "Humans in 100 years", and the first 20 minutes of the History Channel's original 2 hour video "Life after People" (He is a link for a condensed 4 minute version)..

5-16-16: We reviewed the fusion article and solved p207 # 9 and 10 in preparation for the chapter 6 exam. Key terms for chapter 8 are due the day after the exam.

5-13-16: Students received an article about fusion power. A link to this article can be found HERE along with a the prompts. Students are to submit written responses to the prompts.

5-12-16: We completed the topics covered in chapter 6. An exam is forthcoming (Section 3- "Molecular Shapes" is not included on the exam). Students should prepare key term definitions for chapter 8; due the day after the exam.

5-11-16: Again with over 1/3 of the class taking exams, we did not proceed with chapter 6 lessons. We completed the video from yesterday and watched a short video on silk production.

5-10-16: With so many taking AP tests and the half day schedule, we watched the first 32 minutes of the science video, "How we Got to Now" See: and to watch and learn more.

5-9-16: We drew Lewis structures for single, multiple and resonating bonds. Students are to complete all the structures from the CRWS and the additional Lewis structure problems listed on the last page for homework.

5-6-16: We began to learn how to draw Lewis structures. We reviewed terminology. Students are to complete the single bonded structures up to page 202 in the text and CRWS.

5-5-16: We reviewed how electronegativity affects the type of bond that exists between two atoms. We completed CRWS 6.1.

5-4-16: Students received the CRWS reference pack for chapter 6 sections 1 and 2. We discussed the most of the material in section 1 and reintroduced Gilbert Lewis to start section 2. We also had a four question quiz on chapter 5 material covering ionic bonds, electron neutrality, and the names and formulas of ionic compounds.

5-3-16: We completed the materials for chapter 5 writing names and formulas for ionic compounds. Students received credit for completing the ionic formula worksheet.

5-2-16: I checked the HW and we reviewed it. Students are to complete the two sided ionic compound worksheet. It will be graded tomorrow. We continued to learn how to write names and formulas for ionic compounds.

4-29-16: Students saw the last demonstration of ionic solutions conducting electricity (cooking a hot dog with 100VAC). We discussed electron neutrality in determining an ionic formula. Students are to solve CWRS 5.3 #1-31 and the simple ionic formula side of a worksheet handed out (Ionic Names and Formulas).

4-28-16: Students saw demonstrations of the 5 properties of ionic compounds.

4-27-16 - Half day for report card conferences. We completed our review of CRWS 5.1 #1-16. Students were given the five properties of ionic compounds to record in their reference sheets,

4-26-16: No Class due to Election Day. Teachers had professional development on restorative practices.

4-25-16: We continued an introduction to ions and ionic compounds. We began a review of CRWS 5.1 and examined the common ion tables. Key terms for chapters 5 & 6 were checked for grade.

4-22-16: Students received a reference sheet pack for chapter 5. We watched a video (World of Chemistry #8 - "Chemical Bonds" - See reference item 3). Students completed and submitted a worksheet from the video for grade. We discussed Fritz Haber, the Haber process, chemical weapons used during WWI, and nitrogen based explosives.

4-21-16: We took the chapter 4 exam today. An puzzle sheet and two essay prompts were provided as extra credit. I changed the homework assignment as follows: Key terms for chapter 5 and 6 are due Monday.

4-20-16: Two graded item today: 1 - A quiz on the periodic table groups, and 2 - The Mendeleev Periodic Table activity. The chapter 4 exam will be tomorrow. Key Terms for chapter 5 are due Friday (Changed HW - See 4-21-16 entry)..

4-19-16: We completed the topics on the periodic table and reviewed for the quiz and exam (Thursday). Tomorrow will be a quiz on the periodic table groups (no notes) and a culminating activity.

4-18-16: We completed watching "The Electric Boy" video and reviewed the CR from Friday. Students submitted it for grade as well as the extra credit video worksheet.

4-15-16: Students received a constructed response (CR) on trends in the periodic table (Density, Melting and boiling points). We also watched Cosmos "The Electric Boy" through 47:50min.

4-14-16: We saw a video titled "Ferocious Elements". We discussed property trends on the Periodic Table. Students were asked to test themselves on the 11 group names on the table

4-13-16: We went over CRWS 4.2. I performed the demonstration of Magnesium reacting with oxygen to form a salt. I performed a demonstration using a welding transformer as to why inert gases are used to weld metals, and I performed the "Prince Rupert's Drop" demonstration (See Reference Item #93).

4-12-16: We continued learning about the history of the periodic table. We saw a decent periodic table app for a smart phone (EMD). Students who download a periodic table app for their smart phone receive extra credit. We discussed the answers for CRWS 4.1 and students received credit toward their term 4 grade for its completion. We watched "Elemental Funkiness" and discussed a few property trends in the table.

4-11-16: Term 3 grades are posted including last weeks exam. New work this week goes into term 4. We finished the video ""The Hidden Order". Students also saw a short video on "Prince Rupert's Drops" (See reference item #93). I showed students where to get the group names for part of the chapter 4 reference pack distributed last week. We discussed the Trailblazing work of Great Britain's Royal Society. See Reference link #95 for more information.

4-8-16: I checked Key Terms. We discussed the work of Dobereiner and Newlands. We watched "The Hidden Order" video (See reference link #81) to 22:25.

4-7-16: The College Possible assembly resulted in very low attendance. We watched 36 minutes of the PBS American Experience video about the "Donner Party" (See Reference link #85).

4-6-16: I did not check key terms because our class attended the junior class election assembly.

4-5-16: We took the exam and an extra credit puzzle was handed out.

4-4-16: We reviewed for the exam. It will be open notes. Key terms for chapter 4 are due Wednesday.

4-1-16: Students practiced electron configuration rules (Aufbau, Hund's, & Pauli) to configure pennies (electrons) on a diagram and identify the atom represented by the diagram. A grade (pass or fail - all present passed) was given for the activity. The exam covering chapter 3 will be Tuesday. We will review on Monday.

3-31-16: We completed our discussion of electron configuration and the work needed for chapter 3 and we completed filling in the "Atomic Theory Timeline". We will have a few review review activities before the exam next week (The exam does NOT cover section 4, "Counting Atoms". We also watched a new periodic table song/video (see link #59 via the reference tab on the left.

3-30-16: We finished the Bill Nye video and students submitted the video worksheet for grade. We discussed the space elevator project and I showed a sample of carbon fiber. I demonstrated flame tests and electromagnetic spectra of several elements using the spectroscope. Students also were required to make a graphic illustration of the Electromagnetic spectrum on a constructed response worksheet that should become part of their notes. It also included a practice exercise on Dalton's five principles.

3-29-16: We explored quantum numbers and discussed electron configuration. We solved p.99 #1-7.

3-28-16: We finished "Coraline" and then watched "The Nuclear Boy Scout" about David Hahn (See Reference link #8). We explored nuclear fission through the University of Colorado Phet Simulations (See Reference link #89). Tomorrow we will continue our study on electron configuration with problems from chapter 3 page 99 #4-7. Read these to prepare for class.

3-21-16: With reduced attendance, watched about 70 minutes of "Coraline" - Have a great spring break.

3-18-16: We learned about Bohr Diagrams and ways to write electron configuration notation. We looked at the closed shell electron configuration of the Noble gases and began a discussion of valence electrons. For grade, I checked that students had the marked up periodic table made yesterday and that they had CRWS 3.3 #1-12 answered (we did not review the answers). We discussed the use of the spectroscope for identifying the spectra lines of atoms.

3-17-16: Students were given the 2nd reference pack for chapter 3 and marked up a periodic table according to a modified version of p119 of the textbook for use in writing electron configurations. We discussed radiation and plastics and completed all but the last topic in the Bill Nye Video.

3-16-16: Students received a biography on Alfred Nobel along with 4 prompts to respond to. We reviewed the article and the prompts. Students are to submit this for grade. We also reviewed the answers to the "Getting to Know the Periodic Table" questions from yesterday and discussed some of the properties and names of elements. I awarded credit to those who had it complete.

3-15-16: Students received a 1/3 sheet to help practice Dalton's 5 principles (to be memorized for the exam) and another "Getting to Know the Periodic Table" search sheet. We continued with the Bill Nye video to the end of the section titled "Radiation". We discussed the CRT and I demonstrated and displayed this tool that helped discover the electron.

3-14-16: Students were asked to memorize Dalton's 5 principles and we practiced them through recital. I demonstrated a reaction with calcium metal and water. I wrote the reaction equation and we discussed properties of metals (they are shiny and conduct electricity) and chemical change. We continued the Bill Nye video up to 23:26, about to start "The Electron". Those students who missed a section of the video can see it through a link as Reference Tab item #27.

3-11-16: I checked the homework for grade and reviewed it. Students were asked to continue with similar problems for the section/chapter review on names and formulas for isotopes. We discussed a little about quark theory and watched two videos: (one on the explorations into subatomic particle physics: and the other on dark matter:

3-10-16: We reviewed P86 #1-4 and learned about Isotopes. Students are to complete CRWS 3.2#19 for HW. We also watched a few Tom Lehrer videos beginning with "The Elements".

3-9-16: Students were required to answer CRWS 3.2 #1-11 (we reviewed a few of these). We saw the reaction of nitric acid with copper (green bubbling stuff produced) and with silver (no reaction). We read a few pages of "Conversations on Chemistry" by Jane Marcet. We continued with the Bill Nye video to "Electricity" (19:37).

3-8-16: Student are learning about the atom through a history of the seminal experiments that lead to our modern understanding of the atom. See Reference links#7 for two old chemistry books from the 1800's, one was written by a woman (unheard of in the 1800's!); so, Happy International Woman's Day. Students received a reference pack for chapter 3 and we reviewed Dalton's 5 principles that students need to memorize for the exam. We continued the Bill Nye video into "Chemical Structure" (15:22).

3-7-16: We began chapter 3. I checked HW (key Terms) for grade. We discussed parts of the atom (briefly). I handed out a periodic table (the pink one) for reference in this course. As part of the advisory function of this period, I handed out C-31 notices to students who had 3 or more unexcused absences. These are to be signed by a parent and returned within 1 week.

3-4-16: Students took the chapter 1&2 exam. Key terms for chapter 3 are due Monday.

3-3-16: I answered review questions students had concerning the exam tomorrow. I assigned Key term definitions for chapter 3 as HW due after the exam (Monday). We began the Bill Nye Video. Two extra credits were offered: 1 - Play Little Alchemy and create 200 items from combinations of Air, Earth, Fire, and Water. and 2 - Visit the Chemical Heritage Foundation museum in Philadelphia (See assignment #49 from the tab on the left).

3-2-16: Students saw demonstrations of distillation of water. I also demonstrated the "Methane Mamba" and students are required to write up and submit a Lab Report on it in the format provided in class, due by Friday. Those students who missed the demonstration can e-mail me a one page report from a you-tube video found from a search on the words "discrepant event". The e-mail must have the subject title "Methane Mamba Makeup - Discrepant Event Video". In the e-mail text body, first describe what is meant by the term "discrepant event". Then copy the url hyperlink (so I can watch the video) and write following descriptions: Equipment Used, What Was Done, What Happened, and an Explanation of Why it Happened. I handed out a video worksheet for the video "Bill Nye's Greatest Discoveries in Chemistry". We did not begin the video. The unit exam covering chapters 1 & 2 will be Friday.

3-1-16: Students were given answers tot eh multiple choice questions on page 35 and 71 to review for the upcoming exam. We discussed the format of a lab report and reviewed the distillation of water. The exam will be Thursday or Friday.

2-29-16: Students received a worksheet concerning precision, accuracy, and percent error. We reviewed this then then applied it to measurements of density. The exam covering chapters 1 & 2 is forthcoming. We have covered all the material for the exam. For extra credit students can perform an error analysis by determining to percent error introduced in the demonstrated density measurement of the rock (via suspension in water) by the weight of the string and paper clip.

2-25-16: We reviewed the density graph and use of logarithmic scale. We watched the video "Powers of 10" to better appreciate the system of prefixes and unit in the metric system. We learned about the 5 modes of entry of chemicals into the human body and the system of hazard communication on the NFPA label. We also reviewed the Lab Equipment reference sheet and answered the questions on the back side of the sheet.

2-24-16: Students were given a piece of graph paper to create, for grade, a bar graph of the liquid a solid densities listed in Table 4 on text page 17. Students were to qualify which materials needed to be included on the graph. We reviewed the qualities of a bar graph. Your graph is due tomorrow must have the following attributes for a full credit grade: Axis labels, Y-axis with uniformly scaled numbers, proper density units on the Y-axis, a graph title, all required substances represented by a bar, and neatness.

2-23-16: I gave credit toward grade for completion of the HW. We reviewed the HW. We discussed various measurements of volume derived using the metric system (i.e. cc, ml, cm^3, and L). Students also saw a demonstration of the sublimation of iodine and the affect of its contact with human skin.

2-22-16: I graded and reviewed the HW. We discussed the prefixes and units of the metric system. Students are to complete the Metric Measurement Conversions sheet for HW as shown in class.

2-19-16: I graded and reviewed the HW. We discussed the factor unit method for calculations. I showed how it is used for keeping track of units by calculation the gallons occupied by 3 grams of oxygen gas at 2 atm pressure and 290K. For HW students are to solve #1-3 on the "Converting between US and SI measurements" reference sheet. Students are also asked to convert 2.99x10^8 m/sec into miles per hour and show the factor unit method as part of their work.

2-18-16: Students received the three page stapled "Math Pack". I checked the HW, key terms for chapters 1 & 2. We reviewed precision and accuracy in measurement using several methods to measure the diameter of a quarter. We discussed significant figures. For HW, students are to complete problems 1-17 on page 2 (right side of the first sheet) on the math pack. I also demonstrated liquid CO2 in a plastic pipette and we exploded a half liter water bottle (behind a safety shield of course) using dry ice.

2-17-17: We began with temperature conversion and continued with more demonstrations using liquid nitrogen and dry ice.

2-16-16: With the shorter period due to the half day schedule, I did not check homework but rather performed a series of demonstrations with dry ice and liquid nitrogen. After a safety talk, students got a chance to play with a piece of dry ice at their desk.

2-12-16: We reviewed the figure on page 381. I demonstrated kinetic molecular theory with reusable heat packs that use the crystallization of a supersaturated solution of sodium acetate to release heat as moving liquid particles solidify. Students are to write the key term definitions from chapter 1 and 2 for homework (to be kept as reference pages in their notebook).

2-11-16: We discussed kinetic Molecular theory, absolute zero, and changes of state. I performed two demonstrations with oxygen gas (steel wool burning and trying to blow out a candle flame). Students are to continue working through the chapter 1 reference sheet. Students were asked to copy Figure 5 from page 381 into their notes.

2-10-16: I checked the HW and distributed a reference sheet covering chapter 1 sections 1 & 2. We reviewed #1-13 covering section 1. We discussed chemical and physical change and I showed a few demonstrations distinguishing heat vs temperature, endothermic vs, exothermic processes, and physical vs. chemical change. As a closing, unanswered question, students were asked to identify the final demonstration (styrofoam + acetone) as a physical or chemical change. Students handed in the two part prompt distributed yesterday for credit toward their grade. Those who did not get credit for the website HW can get full credit by writing at the top of the syllabus, the words, "Check website every day when absent" then draw a circle around the website address in syllabus with a connecting line to these words you wrote at the top.

2-9-16: First day of class. I hope you felt welcome and enthused about the subject. Students received a hard copy print of the syllabus to keep in their notebook and were assigned seats. Note: The syllabus is available in digital format as item #1 on the tab titled "Assignments /EC" on the left. If we entered into course topics, we discussed physical and chemical changes using acetone and polystyrene foam as examples. We discussed how everything in the universe is either matter or energy. If not, we will soon discuss these things. Your homework tonight is three fold: 1) Complete the two-part prompt handed out in class, 2) Assemble a 3-ring binder notebook with a dedicated section for Chemistry to include: Key Terms, notes, and handouts, and to visit this website to read the update I entered after 3:00 pm.
HERE IS THE UPDATE: Circle my website address and place a star in the margin near it. Also, in the margin, write "Science on Saturday" and the dates of the remaining lectures from this website: