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Forensics C

Posted: September 7th, 2020, 7:48 pm
by SilverBreeze
Let's start!
Remember to give your answers using either
[spoiler]answer here[/spoiler]
or
[answer]answer here[/answer]

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?

Re: Forensics C

Posted: September 10th, 2020, 5:34 pm
by lilacs10
1. CaCO3 (s) + 2HCl (aq) --> CO2 + CaCl2 (aq) + H2O (l) 2. Light purple/ lavender 3. Whorl?

Re: Forensics C

Posted: September 12th, 2020, 1:25 am
by SilverBreeze
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!

Re: Forensics C

Posted: September 26th, 2020, 1:13 pm
by SilverBreeze
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?

Re: Forensics C

Posted: October 2nd, 2020, 9:44 am
by Creationist127
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?

Re: Forensics C

Posted: October 2nd, 2020, 10:04 am
by SilverBreeze
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!

Re: Forensics C

Posted: December 3rd, 2020, 7:03 pm
by ThomasL
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?

Re: Forensics C

Posted: January 14th, 2021, 9:26 pm
by ZachMUHS
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?

Re: Forensics C

Posted: January 15th, 2021, 10:07 am
by ThomasL
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

Re: Forensics C

Posted: January 15th, 2021, 1:14 pm
by ZachMUHS
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!