Crime Busters B

jgrischow1
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Re: Crime Busters B

Postby jgrischow1 » March 12th, 2019, 4:56 pm

Is a handheld microscope allowed as a "hand lens"?

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Re: Crime Busters B

Postby CPScienceDude » March 12th, 2019, 5:01 pm

jgrischow1 wrote:Is a handheld microscope allowed as a "hand lens"?

Uh, no? Truthfully though, I’m not sure. I’d just bring a magnifying lens just in case though.
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Re: Crime Busters B

Postby wec01 » March 12th, 2019, 5:11 pm

CPScienceDude wrote:
jgrischow1 wrote:Is a handheld microscope allowed as a "hand lens"?

Uh, no? Truthfully though, I’m not sure. I’d just bring a magnifying lens just in case though.


You will be provided a microscope, the only possible advantage in bringing one is not having to share if they don't have one per station. Even then, there are rarely issues with not having access to the microscope.
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Re: Crime Busters B

Postby qk11 » March 17th, 2019, 10:25 pm

Can anyone direct me to a flow chart or give me a series of steps for identifying what's in a mixture?

Also, what methods of mixture separation are likely to show up at state?

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Re: Crime Busters B

Postby Crimesolver » March 17th, 2019, 10:32 pm

qk11 wrote:Can anyone direct me to a flow chart or give me a series of steps for identifying what's in a mixture?

Also, what methods of mixture separation are likely to show up at state?

https://scioly.org/wiki/images/c/cd/Crime_Busters-worksheets.pdf It's in the last page

I think you're confusing that with potions and poisons, but for the sake of it, you will see chromatography, filtration, magnetism, decantation, and other simple separation. They probably won't give you anything that requires heat like evaporation and distillation, but be prepared for anything.
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Re: Crime Busters B

Postby sam13 » March 20th, 2019, 3:03 pm

Does chromatography solution affect a test differently than water would? I usually use water but states had a separate glass of "chromatography solution" to use. Does anyone know how to make such a solution?

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Re: Crime Busters B

Postby Crimesolver » March 20th, 2019, 4:18 pm

sam13 wrote:Does chromatography solution affect a test differently than water would? I usually use water but states had a separate glass of "chromatography solution" to use. Does anyone know how to make such a solution?

I'm pretty sure they labeled it "chromatography solution" to indicate that it was just for chromatography. There isn't a "recipe" for chromatography solution - it all depends on the type of pen. If it's a sharpie, you would want to use alcohol. If it's a marker, water would work just fine.
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Re: Crime Busters B

Postby sam13 » March 20th, 2019, 4:24 pm

Does anyone know if there is a plastics flow chart? I can't find one anywhere that has all possible science olympiad plastics. If anyone knows a simple way to identify mixtures, I would appreciate guidelines for this task.

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Re: Crime Busters B

Postby Crimesolver » March 20th, 2019, 4:27 pm

sam13 wrote:Does anyone know if there is a plastics flow chart? I can't find one anywhere that has all possible science olympiad plastics. If anyone knows a simple way to identify mixtures, I would appreciate guidelines for this task.

https://www.google.com/search?biw=1313& ... _WEO4VC9iM:
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Re: Crime Busters B

Postby drcubbin » March 20th, 2019, 4:50 pm

wec01 wrote:
CPScienceDude wrote:
jgrischow1 wrote:Is a handheld microscope allowed as a "hand lens"?

Uh, no? Truthfully though, I’m not sure. I’d just bring a magnifying lens just in case though.


You will be provided a microscope, the only possible advantage in bringing one is not having to share if they don't have one per station. Even then, there are rarely issues with not having access to the microscope.

Off the soinc.org website https://www.soinc.org/sites/default/fil ... 121718.pdf
So yes, a hand held lens is permissible, but a hand help microscope? Why do you think you need it?

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Re: Crime Busters B

Postby jgrischow1 » March 20th, 2019, 6:15 pm

drcubbin wrote:
wec01 wrote:
CPScienceDude wrote:Uh, no? Truthfully though, I’m not sure. I’d just bring a magnifying lens just in case though.


You will be provided a microscope, the only possible advantage in bringing one is not having to share if they don't have one per station. Even then, there are rarely issues with not having access to the microscope.

Off the soinc.org website https://www.soinc.org/sites/default/fil ... 121718.pdf
So yes, a hand held lens is permissible, but a hand help microscope? Why do you think you need it?


My kids say they saw another team with one and got jealous I guess. I would have never thought they were allowed.

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Re: Crime Busters B

Postby dholdgreve » March 22nd, 2019, 8:13 am

sam13 wrote:Does chromatography solution affect a test differently than water would? I usually use water but states had a separate glass of "chromatography solution" to use. Does anyone know how to make such a solution?

To the best of my knowledge, there is no specific chromatography solution. It is either polar (water), or non-polar (alcohol, mineral spirits, turpentine, MEK, etc.) Real simple stuff... Water is used on polar soluble inks, Non-polar solvents are used on non-polar inks.
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Re: Crime Busters B

Postby dholdgreve » March 22nd, 2019, 8:20 am

jgrischow1 wrote:Is a handheld microscope allowed as a "hand lens"?

Having run this event for several years, I have never been "tested" on this one, but I think I would differentiate between a hand lens and a microscope. A hand lens is a single lens of varying strength... from 5x to 30x or more. A microscope is multiple lenses stack on top each other. Since the rules say "hand lens," not "hand lenses" I would not allow a microscope to be used, whether is was hand held or not, but you should probably check with the E/C running your competition as this is not the place for official clarifications.
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jgrischow1
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Re: Crime Busters B

Postby jgrischow1 » March 22nd, 2019, 11:19 am

dholdgreve wrote:
jgrischow1 wrote:Is a handheld microscope allowed as a "hand lens"?

Having run this event for several years, I have never been "tested" on this one, but I think I would differentiate between a hand lens and a microscope. A hand lens is a single lens of varying strength... from 5x to 30x or more. A microscope is multiple lenses stack on top each other. Since the rules say "hand lens," not "hand lenses" I would not allow a microscope to be used, whether is was hand held or not, but you should probably check with the E/C running your competition as this is not the place for official clarifications.

thx

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Re: Crime Busters B

Postby K2005 » March 28th, 2019, 8:25 am

Can you write the essay in a list format such as:

Jack (Guilty)
- Evidence
- Evidence
- Motive

Ethan (Innocent)
- Evidence that connects him
- Why it is not true

Etc.

Please help


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