Potions and Poisons B

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Crimesolver
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Re: Potions and Poisons B

Postby Crimesolver » January 29th, 2019, 7:16 pm

qk11 wrote:How many beakers, erlenmeyer flasks, graduated cylinders, and test tubes should a team bring for Potions & Poisons?


You should probably bring 1 of each. If it was really necessary, the proctors would probably provide it.
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Re: Potions and Poisons B

Postby Crimesolver » January 29th, 2019, 7:18 pm

Newbietoscience wrote:May I have some advice on how to do sample question f.? It's the one saying "Given a map, analyze the potential spread patterns of toxic spills via water, wind or gravity."r


You probably just need to understand and interpret different maps like topographic maps and maps showing water currents and understand which direction toxins will generally go.
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Re: Potions and Poisons B

Postby drcubbin » January 30th, 2019, 3:57 am

Crimesolver wrote:
qk11 wrote:How many beakers, erlenmeyer flasks, graduated cylinders, and test tubes should a team bring for Potions & Poisons?


You should probably bring 1 of each. If it was really necessary, the proctors would probably provide it.

As an ES, and one who attended the most recent SO Summer Institute where the idea of a "universal" chemistry box was floated (as well as ES for LISO, Bayard Rustin & Garnet Valley), I myself have a few "questions" about the new universal list. In an effort to make easier the amount and/or type of glassware needed to successfully navigate Potions & Poisons (or any of the other chem events) in one "universal box", we have created what I believe is an even bigger problem. Students coming to P&P are now bringing so much glassware on the list - many times ALL of the glassware on the list - that we have had more breakage in the past three Invys than I have seen in all the time I have been running this particular event. Not that it is creating a dangerous situation, but there does seem to be an increased risk for something to happen. Students do not need multiples of every size beaker, Erlenmeyer flask, graduated cylinder, etc... as are on the list. I was hoping to bring this up in the future, but (as in the Regional Supervisor Notes we create) it would be great if each invy ES (for P & P anyway), could supply a list of what will be needed to complete the test at hand. For instance, for my recent test, students could have easily managed with a couple of large beakers, test tube rack/test tubes, well plate, a couple of small beakers and a few scoopulas, spoons, thermometer and a few other pieces. If there are any other chem ES's reading this, I would appreciate your input on this matter as well.

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Re: Potions and Poisons B

Postby anastasiiapopova » February 7th, 2019, 11:22 am

Rivkaaa wrote:
anastasiiapopova wrote:
gablo wrote:What are the possible labs? We cannot find any info on this.


Based on the last two years, we've had;

chromatography (rarely, but be ready)
mixtures of reagents/ separation of a mixture
serial dilutions (with vinegar)
determination of pH
conductivity testing (not really though)
physical vs chemical changes

The ES would use either one or even all of them. Be ready for all. : )


Yeah, except I've personally never seen chromatography :D .



There was actually a Potions and Poisons chromatography portion in the recent Garnet Valley Invy!

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Re: Potions and Poisons B

Postby Rivkaaa » February 7th, 2019, 8:58 pm

anastasiiapopova wrote:
Rivkaaa wrote:
anastasiiapopova wrote:
Based on the last two years, we've had;

chromatography (rarely, but be ready)
mixtures of reagents/ separation of a mixture
serial dilutions (with vinegar)
determination of pH
conductivity testing (not really though)
physical vs chemical changes

The ES would use either one or even all of them. Be ready for all. : )


Yeah, except I've personally never seen chromatography :D .



There was actually a Potions and Poisons chromatography portion in the recent Garnet Valley Invy!

Actually, I replied to you on Jan 18, while the Garnet invy was on Jan 26 ;)
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Re: Potions and Poisons B

Postby jacobM18 » February 9th, 2019, 7:13 am

On the rules sheet, it classifies Autumn Skullcap as Galerina marginata, when its true binomial nomenclature is Galerina autumnalis. Therefore, what am I expected to study?

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Re: Potions and Poisons B

Postby starfruit » February 10th, 2019, 8:30 am

jacobM18 wrote:On the rules sheet, it classifies Autumn Skullcap as Galerina marginata, when its true binomial nomenclature is Galerina autumnalis. Therefore, what am I expected to study?


Ok, so basically Galerina marginata and Galerina autumnalis and all the other things that pop up when you look up Autumn Skullcap are the same species. Back in about 2001, they thought they were all different because they lived in different places and the viscidity of their caps were different, but phylogenetic analysis proved they were all the same. I would just use Galerina marginata because it's on the rules, but also there is no 'true' scientific name because they're all the same species. Hope this helps!
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Re: Potions and Poisons B

Postby Crimesolver » February 10th, 2019, 3:30 pm

One question on my regionals test was to calculate the solution which has a concentration of 0.05g/mL if you want to decrease it by 10%. I responded with “0.045g/mL” then I realized sig figs exist. Am I supposed to use sig figs in this case? There was a follow up question that asked for the volume of the two solutions, so having the same concentration means they have the same volume, which isn’t very accurate.
Last edited by Crimesolver on February 10th, 2019, 8:30 pm, edited 1 time in total.
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Re: Potions and Poisons B

Postby starfruit » February 10th, 2019, 8:27 pm

Crimesolver wrote:One question on my regionals test was to calculate the solution which has a concentration of 0.05g/mL if you want to decrease it by 10%. I responded with “0.045g/mL” then I realized sig figs exist. Am I supposed to use sig figs in this case? There was a follow up question that asked for the volume of the two solutions, so having the same concentration means they have the same volume, which isn’t very accurate.


I asked my coach and she said possibly, but probably not if it didn't say it explicitly in the directions, and to ask the proctor to double check. Btw congrats on going to states! My team just finished 2nd place at our regionals yesterday and I won Potions :)
2019 events-
potions&poisons/heredity/crimebusters/codebusters

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Re: Potions and Poisons B

Postby starfruit » February 10th, 2019, 8:28 pm

starfruit wrote:
Crimesolver wrote:One question on my regionals test was to calculate the solution which has a concentration of 0.05g/mL if you want to decrease it by 10%. I responded with “0.045g/mL” then I realized sig figs exist. Am I supposed to use sig figs in this case? There was a follow up question that asked for the volume of the two solutions, so having the same concentration means they have the same volume, which isn’t very accurate.


I asked my coach and she said possibly, but probably not if it didn't say it explicitly in the directions, and to ask the proctor to double check. Btw congrats on going to states! My team just finished 2nd place at our regionals yesterday and I won Potions :)


Oh lol nvm then
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potions&poisons/heredity/crimebusters/codebusters

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Re: Potions and Poisons B

Postby Crimesolver » February 10th, 2019, 8:30 pm

starfruit wrote:
Crimesolver wrote:One question on my regionals test was to calculate the solution which has a concentration of 0.05g/mL if you want to decrease it by 10%. I responded with “0.045g/mL” then I realized sig figs exist. Am I supposed to use sig figs in this case? There was a follow up question that asked for the volume of the two solutions, so having the same concentration means they have the same volume, which isn’t very accurate.


I asked my coach and she said possibly, but probably not if it didn't say it explicitly in the directions, and to ask the proctor to double check. Btw congrats on going to states! My team just finished 2nd place at our regionals yesterday and I won Potions :)


I just reviewed the rules, and it said nothing about using sig figs, I think my brain is just wired like that at this point LOL. Thanks so much, congrats for finishing 2nd!
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Re: Potions and Poisons B

Postby Crimesolver » February 17th, 2019, 10:49 pm

I didn't know this till now but Scioly changed wild carrot to western water hemlock? They consider this a "clarification" but they're literally 2 different species in two different species, how do they get it wrong after many of the invitationals have past?? What would be the reasoning behind this change?
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Re: Potions and Poisons B

Postby jimmy-bond » February 17th, 2019, 11:08 pm

Crimesolver wrote:I didn't know this till now but Scioly changed wild carrot to western water hemlock? They consider this a "clarification" but they're literally 2 different species in two different species, how do they get it wrong after many of the invitationals have past?? What would be the reasoning behind this change?

Galahad and I, towards the start of the season, were confused about the presence of the wild carrot in the rules. I did a little research and told him that it isn't harmful and that he shouldn't study it and instead study the water hemlock because they look alike.

So the answer to your question is they look alike and there seems to have been a miscommunication about Daucus and Cicuta. They resemble one another, explaining why the species were confused even though they are from different genera. I have no clue why they changed it after so much of the season has passed, but I'm not blaming them because stuff like that happens. And the main reason for the change is because the wild carrot isn't poisonous and the water hemlock is.
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Re: Potions and Poisons B

Postby coopsadoodles » February 18th, 2019, 12:02 pm

im pretty sure that the wild carrot is toxic to farm animals and such and can cause slight burns to people because of cell sap. Am i wrong?
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Re: Potions and Poisons B

Postby Crimesolver » February 18th, 2019, 12:03 pm

coopsadoodles wrote:im pretty sure that the wild carrot is toxic to farm animals and such and can cause slight burns to people because of cell sap. Am i wrong?

Yeah you’re correct. I guess it’s just not toxic enough lol
Current Events
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