7/22 Cooking Chemistry Challenge Room 1 by Kirsten Jackson https://padlet.com/kirsten_n_jackson/Tier1Room1 Use the space provided to list question, comments and concerns related to this RFP en-us 2016-07-05 12:29:01 UTC 2016-08-01 14:00:55 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Templeball.png Can I narrow the reactions down to an amount like 4 and leave option if the student wants to do more. https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820015 2016-07-22 14:52:25 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820015 Stoichiometric https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820181 Task 2 do they only need to understand molar ratios? At this point they do not understand chemical reactions]]> 2016-07-22 14:56:08 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820181 https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820538 I'm very concerned about the use/lack of units. Why are we letting them use tablespoons and cups? Will our students not need to understand SI units?]]> 2016-07-22 15:00:56 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820538 Tasks 3 and 4 https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820641 why are tasks 3 and 4 separate tasks? Shouldn't the change in energy affect the change at the molecular level?]]> 2016-07-22 15:05:16 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820641 Page 13 - It may be helpful to students if there was a prompt following the link list instructing them to write information from the research sites in the space below. https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820987 2016-07-22 15:17:22 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116820987 It may be helpful for teachers and students to see an exemplar for each task. https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821020 2016-07-22 15:18:42 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821020 What are the specific criteria for assessment of each task? Are teachers expected to design rubrics or assessment criteria or are there "universal" rubrics for each task? https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821024 2016-07-22 15:18:55 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821024 Is each Task assessed separately? Is only Task 5 assessed? Are these county or school-based decisions? https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821061 2016-07-22 15:19:59 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821061 Task 3 https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821114 How can we identify cooking processes that have discernible chemical reactions that can be identified at the molecular level? Some processes clearly have this, but many don't]]> 2016-07-22 15:21:23 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821114 Can a list of "possible" reactions be generated? https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821164 2016-07-22 15:22:19 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821164 https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821167 on page one is mentions that all materials must be original, but then on page three the instructions mention that materials may come from online sources?

]]> 2016-07-22 15:22:24 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821167 Does the project have to be individual? https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821323 2016-07-22 15:25:58 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116821323 decomposition of CaCO3--> CaO + CO2 https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824762 synthesis NH3 + HCl --NH4Cl
combustion Al + O2 -->  Al2O3
organic combustion ok
double replacement
Ca(NO3)2 + NaOH --> NaNO3 + Ca(OH)2]]> 2016-07-22 17:24:52 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824762 For the BCR prompt are they providing the equations on t https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824913 2016-07-22 17:30:58 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824913 https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824916 Too big of a jump from endo/exo to nuclear distances.

]]> 2016-07-22 17:31:06 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824916 Building blocks are missing... Lewis dot structures, nuclear distances, negative potential energy, etc https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824970 2016-07-22 17:31:42 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824970 For the BCR writing prompt include the equations.  Start the writing prompt with an engagement that culturally aware.   https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824971 2016-07-22 17:31:45 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116824971 /common task... energy diagram with bond lengths is a problem https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116825000 2016-07-22 17:33:42 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116825000 Resource for Chemical equations to balance https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116825239 Balancing Chemical equations worksheets" Chris McMullen, Ph. D, 2016]]> 2016-07-22 17:42:08 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116825239 Common Task Evaluate Balancing Chem. Eq https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116825305 Better examples should be chosen especially if there will only be one of each type. Ex, Number 1 could become Al + O2 -> Al2O3 instead of the synthesis of ozone. Number 4 burning a simple hydrocarbon like propane (that could be related back to cooking)
Ideally, ALL the reactions could be related to cooking. (Ex. baking soda decomposing)


]]> 2016-07-22 17:43:58 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116825305 I would suggest replacing the common task "Decomposition of Baking soda" with "Types of Reactions capture sheet" as the common task.  The Baking Soda task is better suited to a different unit. The "Types of reactions capture sheet" is better suited to the reactions unit. https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116825750 2016-07-22 17:55:55 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116825750 Exo/Endo lab :  hard to tie to the RFP.  do you want to choose a cooking example here?  Cold pack reaction is a good extension in particular https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826123 2016-07-22 18:09:28 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826123 Endo/Exo https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826373 How can we teach about Endo vs, Exo if we never define and then discus systems....]]> 2016-07-22 18:16:26 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826373 common task: types of reactions https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826404 Possible reactions that relate to cooking:
1. rusting of of iron wok or cleaver
Fe + O2 --> Fe2O3

2. burning propane in your stove
C3H8 + O2 --> CO2 + H2O

3. Burning sugar by accident when making candy
C6H12O6 --> C + H2O

4. Using baking powder (baking soda + citric or tartaric acid)
NaHCO3 + HA --> H2O + CO2 + NaA

5 single replacement cleaning silver tarnish with aluminum foil
Al + AgO --> Ag + Al2O3

(last one courtesy of MB)]]> 2016-07-22 18:17:40 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826404 Baking soda common task https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826645 This is not appropriate for on-level due to the amount of stochi needed.

further more this lab is very dependent on higher level stochiometery, which is  not supported with the lesson materials.

]]> 2016-07-22 18:25:57 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826645 https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826950 cheeseburger challenge looks good.  Part one in particular is good, but Conservation of mass is deceptive towards cooking.  Part 2 is good, but Part 3 is  misleading.  Should form an equation using symbols which then produce BBnChT2L2O.

This then is a big leap to page 10

]]> 2016-07-22 18:35:26 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116826950 I don't have my packets here in front of me, but I've been thinking about this since yesterday and have a few comments: https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116851440
1. The precipitation reaction with lead chromate in it has to go. Whoever came up with that apparently is unaware that MCPS has banned lead from classrooms and even if that weren't true, chromate is not something we should be exposing students or teachers to and lead chromate shouldn't be given the opportunity to get into the environment, and if you have solutions of lead chromate in classrooms you can be sure it will. Clearly there are alternatives to use that aren't dangerous to human health and to the environment.
2. Making hamburgers - I'm sorry, this is trivializing what we do, I mean really. I haven't digested enough of what else that's there but this irked me tremendously. We can't use examples with atoms? Hydrogen and oxygen to make water maybe? We have to go to making paper hamburgers. The textbook makes the point about how making bicycles is a stoichiometric exercise, this is more of the same. In my mind it trivializes one of the more important aspects of what we're trying to teach which is that there are these invisible things out there that you'll likely never see but which otherwise create everything around you, so you have to sort of take it on faith that those things exist and are out there, but when we start talking about them and doing an exercise about them we use an exercise where we make paper hamburgers - puhleeeeeze. Are we that afraid that students won't get it that we have to dumb this down that far?]]> 2016-07-23 19:42:54 UTC https://padlet.com/kirsten_n_jackson/Tier1Room1/wish/116851440