Chemteacher

SBTL, swim, chem, baseball, I talk with my hands

Author Archives: soxteacher

CH40 – “H” is for “Henthalpy”

Dates P4 – Wednesday, April 25th P5 – Thursday, April 26th P7 – Friday, April 27th Lab Recap what did you determine for “c” ? what identity did you determine … Continue reading

2018-04-25

CP40 – Long Block Lab

Date Tuesday, April 24th Data Collection Review what is to be recorded? what to watch for? Lab Day Notes be sure and notice the identity of the metal hot plates … Continue reading

2018-04-23

CH39 – Lab Day

Dates P4 – Monday, April 23rd P5 – Monday, April 23rd P7 – Tuesday, April 24th Lab Day Note hot plates wash beakers use tap water sig figs –> thermometers … Continue reading

2018-04-22

CP39 – Lab Prep

Date Monday, April 23rd Revisiting – Q = mcDT units? meaning? questions? Sample Problem Chapter 4 (24) set-up equations calculations Lab Day Prep Conduct a lab to determine identity of … Continue reading

2018-04-22

CH38 – Lab Thinking

Dates P4 – Friday, April 20th P5 – Friday, April 20th P7 – Monday, April 23rd Revisiting Q = mcDT each term defined units? new – when does it apply? … Continue reading

2018-04-20

CP38 – Coffee Cups

Date Thursday, April 19th Previous Class Recap Q = mcDT what does each term mean? what are the units for each part? New Idea – Calorimetry insulating system prevents heat … Continue reading

2018-04-18

CH37 – Heat Capacity

Dates P4 – Wednesday, April 18th P5 – Thursday, April 19th P7 – Thursday, Apri 19th Recap Last Lesson First Law of Thermo Negative means “directon” (NOT less than zero) … Continue reading

2018-04-17

CP37 – Calorimetry

Date Wednesday, April 18th Homework Terms kinetic energy potential energy conservation of energy joule – calorie specific heat New Idea – Heat Capacity how much energy to raise temperature different … Continue reading

2018-04-17

CH36 – Conservation

Date Tuesday, April 17th Review Homework system <–> surroudings path-dependent <–> state function exothermic <–> endothermic law of conservation of energy first law of thermodynamics work (when a gas expands = works) … Continue reading

2018-04-16

April 15th = 42

I wrote this post five years ago on the occasion of the release of the movie “42,” depicting the life of Jackie Robinson. Every April 15th I think about the … Continue reading

2018-04-15

CP36 – Energy!

Date Monday, April 16th New Idea – Energy heat – temperature – thermal energy differences relationships examples Homework Textbook Ch. 4 – Sections 4 & 5 define key terms (p. … Continue reading

2018-04-15

CH35 – Thermo

Date P4 – Monday, April 16th P5 – Monday, April 16th P7 – Monday, April 16th New Idea – Energy warm-up activity types of energy phases <–> energy heat – … Continue reading

2018-04-15

Just Poetry

Sometimes I write bad poetry – here are samples from the past few years Sub Duties Subbed a class today where I bribed the students with a vat of bacon … Continue reading

2018-04-12

CP35 – Fun Videos!

  Date Friday, April 6th Class Business – Lab Reports multiple trials – formatting summarizing calculations general thoughts? comments? Reminders about Labs (that have always been true) Lab report grading … Continue reading

2018-04-03

CH34 – Almost…

Dates P4 – Wednesday, April 4th P5 – Thursday, April 5th P7 – Friday, April 6th Lab Reports submit mini-reports comments? liked? didn’t like? Long Block Part 1: Virtual Lab … Continue reading

2018-04-03

CP34 – Long Blocking

Date Tuesday, April 3rd Lab Reports Collected Thoughts? Results? Difficult aspects? Easy parts? Formatting? Long Block Part 1: Acid-Base Calcs Final Idea: Kw Kw = [OH–] [H+] = 1 x … Continue reading

2018-04-02

Titration Competition

Thanks to everyone who submitted an image for the competition. After the voting was concluded the winner is PICTURE #3! CONGRATULATIONS to EM and BV from P5!

2018-04-02

CH33 – Still VL

Dates P4 – Monday, April 2nd P5 – Monday, April 2nd P7 – Tuesday, April 3rd Mini-Lab Reports nice job! very clean and logical reminder: writing in LNB is not … Continue reading

2018-04-01

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