Week of 9/14

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.

Week of 9/8

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!

Tuesday:

Wednesday:

Thursday:

  • 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

Friday:

  • 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.

Science Opportunities

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.

VASTS

VESSS

  • 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.

     

    http://www.vsgc.odu.edu/VESSS/

     

    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/ 

Error Propagation

  • Error Propagation:
      • Adding and Subtracting
      • Multiplying and Dividing by a Constant
      • Multiplying and Dividing when more than one number has an uncertainty
      • Multiple operations + a constant

Week of 4/6/15

HOMEWORK SOLUTIONS for ch. 18

Monday: No school, teacher work day

Tuesday: Review of entropy and gibbs free energy informally. Then worked on multiple choice entropy problems.

Wednesday: Review of equilibrium concepts.  Just asked what you remembered and then lead you through some ideas (Le Chatelier, Q vs K).  Then lecture on meaning of delta G and it’s relationship to the equilibrium constant.  Spent time working practice AP free response questions. Last bit of class told you that I’m putting a design a lab question on your test as shown on page 6 of unit outline packet (Hess’s Law to calculate heat of combustion of Mg).

Thursday: Review time. Handed out some practice multiple choice.  Here’s the answers for the first 3 pages. The last page has answers that are all D except the last two are C.

Friday: Test!

Week of 3/23

Monday: Instead of having the test we started the thermo unit.  We went over Q=mCdeltaT, did a lab with CaCl2 and the baking soda/vinegar reaction to calculate heat of reaction/mole.  We also did some Qin = -Qout problems and briefly went over heating curves and those calculations.

Tuesday: Test on IMF and properties

Wednesday: Warm up was a Qin = Qout problem with melting! Most of class was spent learning 3 more methods for calculating heat: bond enthalpies, hess’s law puzzles and heats of formation.

Thursday: Review of 3 types of problems then internal energy and work problems.

Friday: Entropy and Gibbs Free energy.  We kinda ended the day short since it was the day before spring break so even though there was time to work problems I don’t think many of you did…

Week of 3/16

Monday: IMF POGIL followed by starting the Physical properties Jigsaw.  Handed out POGIL, unit outline, powerpoint.

Tuesday: finished jigsaw and started practice packet.

Wednesday: Chromatography lab.  We made it through the first experiment + redesigned experiment.  We tried mixtures of NaCl and IPA.  Salomon stayed after school and redid the experiment. We ended up leaving it until the solvent was almost to the top which showed that NaCl was waaaaaay better than IPA. All three colors were clearly separate. So am thinking that we should mess with the amount of NaCl rather than adding IPA next year…

Thursday: Spider web for bonding types on large paper in groups (bonding in center, 5 spokes (separated NP and  P) list 5 properties for each type). Needed to give a hint that they should focus on the properties rather than just the definition of the types of bonds.  Then gave them 4 different whitish- solids that they had to determine type of bonding of.  We made it a game – first group to figure it out with least amount of info wins, but this just made them guess instead of having definitive evidence.

Friday:Review…finished the figure out type of bonding lab.  I did some formal review to clarify questions about IMF vs. covalent bonds.  Had about 15 min to work on packet.

Packet answers!

Notes:

Week of 3/9/15

Monday: Today we learned to name aldehydes and ketones and then did the organic modeling lab. It was great practice for hybridization, sigma and pi bonding.  I briefly reviewed the idea of polar bonds so you could answer those questions, too.

Tuesday: Today we did the Phet Simulation on Molecular Polarity.  Used this to guide you. At the end of class we went over the shapes that are always non-polar.

Wednesday: Went over section 15.5 in textbook. 4 things that make acids strong – polarity in period, bond strength/atomic radius in a group of acid halides, number of oxygens in an oxyacid and electronegativity of the atom that isn’t H or O in oxyacids.  We went over part 2 of the organic modeling lab and then spent the rest of class practicing shapes and polarity (back of powerpoint packet).

What I am collecting on test day: Textbook problems and organic modeling lab!

Thursday: review day. You’ll have time to finish stuff or do the AP multiple choice problems.

Friday: Bonding Test!

Week of 2/23

Monday: Review of ionic radii trends and Born-Haber cycle. Quiz next class. Answer key to ionic bonding essays.  Notes

Tuesday: Ionic bonding test

Wednesday: Organic Naming (alkanes and alkenes) and Lewis structures (plus went over bond length and resonance/ limitations of Lewis structures). Notes. Homework: see unit outline.

Thursday: snow day

Friday: Today started with a lecture on functional groups – mainly just identifying them and then learning to name carboxylic acids and alcohols. The second half of class we went over expanded valence compounds (some elements can have more than 8 electrons – put the extra electrons on the central atom). We also went over some examples of molecules that require formal charge rules to figure out the true structure.  Today’s notes.

Homework:see unit outline and watch this video!

Week of 2/16

Monday: president’s day holiday

Tuesday: snow day

Wednesday:  2 hr delay, but we still made it through a good chunk of the bonding packet. Here’s the notes.

Thursday: ionic radius and transition metal ions

Friday: Handed out unit outline (new format!). Melting points and bond strengths for ionic and metallic + Born Haber Cycles. At the end of class (which was also short b/c of a 2 hr delay) you worked in groups to draw the cycles and solve one of the Born Haber problems.  Notes.

Homework is to continue with google classroom essays and to finish the Born-Haber problem you were working on in class. On Monday we’ll review. Quiz on Tuesday.