Crime Busters B

Test your knowledge of various Science Olympiad events.
NinjaKat748
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Re: Crime Busters B

Postby NinjaKat748 » January 5th, 2018, 11:36 am

If you were given water and hydrogen peroxide, how would you find the difference between them? (They have the same ph, are odorless, and look pretty much exactly alike, just as a reminder)
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Tailsfan101
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Re: Crime Busters B

Postby Tailsfan101 » January 6th, 2018, 7:48 am

NinjaKat748 wrote:If you were given water and hydrogen peroxide, how would you find the difference between them? (They have the same ph, are odorless, and look pretty much exactly alike, just as a reminder)

Put some iodine in them. The hydrogen peroxide will fizz right away, but the water will have no reaction.
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2018
State/Nats
CB: 1/35
RS: 1/44
DD: 2/37
MM: 3/46

2019
Mini-Inv./DISCO/State/Nats
RS: 1/2/1/-
DD: -/3/2/-
HD: 2/4/4/-
CB: 3/6/1/-
ELG: -/6/-/-
GLM: -/-/-/31
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Possible 2020 events: DD, GLM, Code, WIDI, 4N6

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Tailsfan101
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Re: Crime Busters B

Postby Tailsfan101 » January 26th, 2018, 8:02 am

Going to start this up again...

What is the only plastic that floats in 50% Isopropyl Alcohol?
2019 Treasure Valley Homeschool Wiki
2018
State/Nats
CB: 1/35
RS: 1/44
DD: 2/37
MM: 3/46

2019
Mini-Inv./DISCO/State/Nats
RS: 1/2/1/-
DD: -/3/2/-
HD: 2/4/4/-
CB: 3/6/1/-
ELG: -/6/-/-
GLM: -/-/-/31
WIDI: -/-/-/24


Possible 2020 events: DD, GLM, Code, WIDI, 4N6

Assassinator for games #118 and 136

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Re: Crime Busters B

Postby cookie75 » January 27th, 2018, 10:09 am

Tailsfan101 wrote:Going to start this up again...

What is the only plastic that floats in 50% Isopropyl Alcohol?


Polypropylene?

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Re: Crime Busters B

Postby Tailsfan101 » January 27th, 2018, 10:20 am

cookie75 wrote:
Tailsfan101 wrote:Going to start this up again...

What is the only plastic that floats in 50% Isopropyl Alcohol?


Polypropylene?

Correct! Your turn.
2019 Treasure Valley Homeschool Wiki
2018
State/Nats
CB: 1/35
RS: 1/44
DD: 2/37
MM: 3/46

2019
Mini-Inv./DISCO/State/Nats
RS: 1/2/1/-
DD: -/3/2/-
HD: 2/4/4/-
CB: 3/6/1/-
ELG: -/6/-/-
GLM: -/-/-/31
WIDI: -/-/-/24


Possible 2020 events: DD, GLM, Code, WIDI, 4N6

Assassinator for games #118 and 136

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Re: Crime Busters B

Postby cookie75 » January 27th, 2018, 10:50 am

Um... all right then...
What are the four nitrogenous bases in DNA?

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Re: Crime Busters B

Postby Tailsfan101 » January 29th, 2018, 7:29 am

cookie75 wrote:Um... all right then...
What are the four nitrogenous bases in DNA?

Adenine, Guanine, Cytosine, and Thymine.
2019 Treasure Valley Homeschool Wiki
2018
State/Nats
CB: 1/35
RS: 1/44
DD: 2/37
MM: 3/46

2019
Mini-Inv./DISCO/State/Nats
RS: 1/2/1/-
DD: -/3/2/-
HD: 2/4/4/-
CB: 3/6/1/-
ELG: -/6/-/-
GLM: -/-/-/31
WIDI: -/-/-/24


Possible 2020 events: DD, GLM, Code, WIDI, 4N6

Assassinator for games #118 and 136

cookie75
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Re: Crime Busters B

Postby cookie75 » January 29th, 2018, 8:20 pm

Tailsfan101 wrote:
cookie75 wrote:Um... all right then...
What are the four nitrogenous bases in DNA?

Adenine, Guanine, Cytosine, and Thymine.

That's correct

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Re: Crime Busters B

Postby Tailsfan101 » January 30th, 2018, 7:04 am

New Question: What is the only way to tell apart salt and sugar?
2019 Treasure Valley Homeschool Wiki
2018
State/Nats
CB: 1/35
RS: 1/44
DD: 2/37
MM: 3/46

2019
Mini-Inv./DISCO/State/Nats
RS: 1/2/1/-
DD: -/3/2/-
HD: 2/4/4/-
CB: 3/6/1/-
ELG: -/6/-/-
GLM: -/-/-/31
WIDI: -/-/-/24


Possible 2020 events: DD, GLM, Code, WIDI, 4N6

Assassinator for games #118 and 136

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Re: Crime Busters B

Postby Benewcomb » January 31st, 2018, 8:44 am

The shape of the granules, and the taste. Salt is mainly cubic, and sugar looks a bit like a fallen column. Of course sugar is sweet, and salt is, well, salty.
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Re: Crime Busters B

Postby Tailsfan101 » January 31st, 2018, 2:05 pm

Benewcomb wrote:The shape of the granules, and the taste. Salt is mainly cubic, and sugar looks a bit like a fallen column. Of course sugar is sweet, and salt is, well, salty.

Correct! Your turn. (I don't think we're allowed to taste it)
2019 Treasure Valley Homeschool Wiki
2018
State/Nats
CB: 1/35
RS: 1/44
DD: 2/37
MM: 3/46

2019
Mini-Inv./DISCO/State/Nats
RS: 1/2/1/-
DD: -/3/2/-
HD: 2/4/4/-
CB: 3/6/1/-
ELG: -/6/-/-
GLM: -/-/-/31
WIDI: -/-/-/24


Possible 2020 events: DD, GLM, Code, WIDI, 4N6

Assassinator for games #118 and 136

Benewcomb
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Re: Crime Busters B

Postby Benewcomb » February 1st, 2018, 5:39 am

What’s are the differences between wool and silk (when burned)? (Hey girls you doing the curiosity confidence challenge?)
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Re: Crime Busters B

Postby Polarrr » February 14th, 2018, 4:54 pm

I think wool has a stronger odor than that of silk, although they are similar. Also, silk stops burning once you take it out of the flame but wool may continue for a bit.

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Re: Crime Busters B

Postby Benewcomb » February 19th, 2018, 7:52 am

Yes! Your turn.
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Re: Crime Busters B

Postby Polarrr » February 20th, 2018, 8:06 pm

How do you identify the difference between polyester, nylon, and acrylic in a burn test? How do they differ underneath a microscope?


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