Forensics C

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SilverBreeze
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Forensics C

Post by SilverBreeze » September 7th, 2020, 7:48 pm

Let's start!
Remember to give your answers using either
[spoiler]answer here[/spoiler]
or
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Ask a question, wait for someone else to respond, tell them if their answer is correct (spoilered please), and let them ask the next set! Refer to the stickied thread https://scioly.org/forums/viewtopic.php?f=193&t=5981 for more clarifications!



1. What is the balanced reaction between calcium carbonate and hydrochloric acid?
2. What color does KCl burn?
3. What general type of fingerprint (loop, whorl, arch) is a double loop fingerprint?
Last edited by SilverBreeze on September 7th, 2020, 7:53 pm, edited 6 times in total.
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Re: Forensics C

Post by lilacs10 » September 10th, 2020, 5:34 pm

1. CaCO3 (s) + 2HCl (aq) --> CO2 + CaCl2 (aq) + H2O (l) 2. Light purple/ lavender 3. Whorl?

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Re: Forensics C

Post by SilverBreeze » September 12th, 2020, 1:25 am

lilacs10 wrote:
September 10th, 2020, 5:34 pm
1. CaCO3 (s) + 2HCl (aq) --> CO2 + CaCl2 (aq) + H2O (l) 2. Light purple/ lavender 3. Whorl?
All correct! Your turn!
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Re: Forensics C

Post by SilverBreeze » September 26th, 2020, 1:13 pm

Revive time...

1. If crack A stops at crack B, which crack was first?
2. What color does sucrose turn in Benedict's solution?
3. Oh no! Your flame loop burns yellow no matter which compound you test. What piece of equipment should you use?
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Re: Forensics C

Post by Creationist127 » October 2nd, 2020, 9:44 am

SilverBreeze wrote:
September 26th, 2020, 1:13 pm
Revive time...

1. If crack A stops at crack B, which crack was first?
2. What color does sucrose turn in Benedict's solution?
3. Oh no! Your flame loop burns yellow no matter which compound you test. What piece of equipment should you use?
Crack B
Pretty sure sucrose doesn't react with Benedict's
A piece of cobalt-blue glass?
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Re: Forensics C

Post by SilverBreeze » October 2nd, 2020, 10:04 am

Creationist127 wrote:
October 2nd, 2020, 9:44 am
SilverBreeze wrote:
September 26th, 2020, 1:13 pm
Revive time...

1. If crack A stops at crack B, which crack was first?
2. What color does sucrose turn in Benedict's solution?
3. Oh no! Your flame loop burns yellow no matter which compound you test. What piece of equipment should you use?
Crack B
Pretty sure sucrose doesn't react with Benedict's
A piece of cobalt-blue glass?
All correct!
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Re: Forensics C

Post by ThomasL » December 3rd, 2020, 7:03 pm

I'll start again:)

1. How many deltas are in a loop?
2. What powders are identified with a) fertilizer (I believe there are multiple--name at least one), b) eye wash, c) salt substitute?
3. In mass spectrometry, what are the relative abundances of the M+1 and M+2 (Cl and Br) peaks, if they exist?

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Re: Forensics C

Post by ZachMUHS » January 14th, 2021, 9:26 pm

1. What is snell's law and what is the common refractive index of air?
2. What is the term for the study of pollen and dusts?
3. What type of finger-printing is best on paper?

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Re: Forensics C

Post by ThomasL » January 15th, 2021, 10:07 am

1. Snell's law relates angles of incidence and refraction through the formula n1*sin(theta1) = n2*sin(theta2), where n are the refractive indices of the two media. Typical refractive index of air is close to 1.
2. Palynology
3. Ninhydrin
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Re: Forensics C

Post by ZachMUHS » January 15th, 2021, 1:14 pm

ThomasL wrote:
January 15th, 2021, 10:07 am
1. Snell's law relates angles of incidence and refraction through the formula n1*sin(theta1) = n2*sin(theta2), where n are the refractive indices of the two media. Typical refractive index of air is close to 1.
2. Palynology
3. Ninhydrin
Correct!

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