Monday: You took your 1b test on moles and formulas and then we did some review of percent yield.
Homework: watch video 2.a.3.1. If that one doesn’t work, watch 2.a.3.2, 2.a.3.3, 2.a.3.4 all found on unit 2 page. Try problem 3.93 from the end of chapter 3 in your textbook.
Tuesday: Limiting reactant demo and LR practice in the packet.
Wednesday: Micromole rockets lab
Thursday: Green chem pre-lab
Friday: Green chem lab – first part of class you got into mixed groups and presented the 3 different ways of doing the calculations. Then you went and did the lab and many had time to do the calculations. Write up is to do calculations only. No conclusion. Percent purity was 84.58% (actual value). Remember to show your logic as you are doing the calculations!
Monday: Avogadro lab. Hopefully there will be enough time to talk through the conclusion so you won’t have so much to do tonight!
Tuesday: The plan is to go over the grading system so you guys are clear on what you need to do to get an A, B, etc. and so that you can understand how to interpret your grade in activegrade.com. Then we’re going to do some empirical and molecular formula problems and explain them at the molecular level. But we didn’t do this… instead we worked on the calculations for the Avogadro lab since many of you weren’t sure about them.
Homework: Hydrate video
Wednesday: I realized that an important key in explaining/justifying calculations is starting with the definitions/properties of atoms and molecules. So we started with a brainstorm of these. Here’s the notes which went over empirical and molecular formulas as well as hydrates and most importantly, their justification at the molecular/atomic level!
HW: Textbook problems / finish lab
Thursday: No class b/c it was short and A block was cancelled.
Friday: We did some challenge problems for A block, making sure to learn to do them in 2 ways and be able to explain all the different methods. During B block we went over determining empirical formula using combustion analysis. Video here:
Homework: Study for moles and formulas test on Monday
Monday: Today we started with a review of drawing particle level pictures. I had volunteers come up to draw various pictures (aqueous sodium chloride, aqueous carbon dioxide, solid lithium oxide, gaseous CO2, and then liquid CO2) which let me see where you guys were getting confused. We also drew two reactions – HCl with Fe and AgNO3 with NaCl.
Next we did some atomic history review. I went over Law of Conservation of Mass, Def. Proportions and Multiple Proportions and then I had you answer a question on google classroom. “Why do we think there are atoms?”. This took a long time b/c you all needed to really process these ideas. It’s one thing to hear them and another to be able to use them as an argument for atoms.
For the last 20 minutes we talked about refinements to Dalton’s Atomic Model – Cathode Ray experiment, Rutherford and finally Mass Spec giving us evidence of isotopes. Notes are here.
Homework: continue with book problems. Test is Thursday.
Tuesday: Today we worked on mass spectrometry packet all class. Most go through #4 and we left 5+ to do on Wednesday.
Wednesday: The first half of the class we did a bit of review: finished mass spec packet and went over some ideas from the molecular representations lab that a couple groups got wrong – definition of pure substance and difference between physical and chemical change. The rest of class you had time to work on homework problems.
Thursday:Test on atomic and molecular theory, atomic structure basics and particle level understanding.
Homework: watch moles video 1.b.2.2 (if you need a refresher!), try problems in ch 3: 27,37, 39, 41, 45
Friday: Skipped DA review because you all were doing it in math and physics already. So we went straight into the derivation of the mole with Chemactivity 2. Next we did some mole practice w/ textbook problems. These were kind of different than the straightforward ones you had in first year chemistry. It’s important that you be able to explain your method. For the second half of class you all worked on the Avogadro pre-lab. Some groups tested out getting the mass of a drop to 3 significant figures.
Homework: formula videos.
Welcome AP Chem Students!
This year I will be posting actual blog posts that will update you on what we’ve done in class and provide links to assignments and other documents.
Just like last year, though, the unit tabs at the top will have the most complete information for a particular unit: links to answers, notes, documents and videos!
As we complete each day, I will update with what we actually did!
- Today we worked on matter classification. We got all the way three to set 3 of the classification concept mapping. I had you draw pics of element, compound and the mixtures and then we worked on drawing aqueous mixtures vs. precipitates
- Today we did the molecular representations lab (posted in google classroom). Which worked out pretty well. Took the whole class + a little extra outside of class for most.
The Society of Women Engineers at the University of Virginia
invites high school seniors and juniors from Virginia to apply to our High School Visitation program on Saturday, November 19, 2016. The program gives young women a comprehensive look at engineering fields and UVA’s engineering curriculum through informative speakers and hands-on design activities. The program is designed to benefit participants with all levels of engineering experience, but we particularly target those students who are not yet familiar with the field and may be interested in applying to engineering schools or pursuing a STEM career.
To apply, students should complete the HSV Fall 2016 Application. This fall session particularly targets high school seniors, but juniors can also apply. Students who have previously applied to HSV, are in the targeted grade level, and demonstrate a strong interest in engineering through their essay will receive priority acceptance and priority consideration for an overnight stay.
The attached flier provides more information about the event and instructions on how to apply online through our website.
The application must be completed online by 11:59 pm on Saturday, October 22, 2016.
For CURRENT 11th and 12 graders only: VIRGINIA EARTH SCIENCE SYSTEMS SCHOLARS!!! Click the link for more information and the application. The online application deadline is October 30, 2016.
The Virginia Earth System Science Scholars (VESSS) program is an interactive on-line science, technology, engineering and mathematics learning experience, highlighted by a seven-day residential summer academy at NASA Langley Research Center in Hampton, Virginia. Students selected to participate in the program are immersed in NASA-related research through interaction with scientists, engineers and technologists. The program is a partnership between the Virginia Space Grant Consortium and NASA Langley Research Center with assistance from Hampton University. The Virginia Earth System Science Scholars program propose to build on the success of the award-winning Virginia Aerospace Science and Technology Scholars (VASTS) program, a program which has offered dual enrollment credit, through TNCC, to over 2900 students since 2008.
VESSS 2016 Week 1: https://www.youtube.com/watch?v=psyxMvAGViM
VESSS 2016 Week 2: https://www.youtube.com/watch?v=lNGbVpA0g9w
Academic Governor’s Schools
Programs in Agriculture, Humanities, Math/Science/Technology, Medicine/Health Sciences, Engineering, and Marine Science
Important Date: The application for the Academic Governor’s School Programs, which require essays and two teacher recommendations, is due on Friday, January 6.
Again, you can find more information about all programs and a link to the applications here: http://www.doe.virginia.gov/instruction/governors_school_programs/summer_residential/