Search found 49 matches

by Sapphire
February 23rd, 2020, 11:29 am
Forum: Question Marathons
Topic: Density Lab B
Replies: 36
Views: 1836

Re: Density Lab B

1) I believe the answer is 18.33 ppm . Explanation: First, we have to convert both of the masses to the same unit (e.g. both have grams for units). 5.5 milligrams is equivalent to 0.0055 grams. 300 mL of water has a mass of 300 grams. Now, to find ppm: 0.0055 grams / 300 grams x 1,000,000, bringing...
by Sapphire
February 23rd, 2020, 11:12 am
Forum: Question Marathons
Topic: Crime Busters B
Replies: 7
Views: 711

Re: Crime Busters B

1.) Which plastics are created using a condensation reaction? 2.) From innermost to outermost, what are the three main layers of hair? 3.) What kind of scales does cat hair have? What kind of medulla does it usually have? 4.) What is the shape of the root bulb of human hair? 5.) What is the chemical...
by Sapphire
February 21st, 2020, 6:16 pm
Forum: Question Marathons
Topic: Density Lab B
Replies: 36
Views: 1836

Re: Density Lab B

1) 8.5 ppm using a density of 2.16 g/cm^3 for salt.
2) 3,910 kg/m^3
3) 1.7*10^27 molecules/m^3
by Sapphire
February 16th, 2020, 2:49 pm
Forum: Question Marathons
Topic: Crime Busters B
Replies: 7
Views: 711

Re: Crime Busters B

1. Automated fingerprint identification system
2. The stationary phase is the paper and the mobile phase is water.
3. PET
by Sapphire
November 11th, 2019, 4:07 pm
Forum: Question Marathons
Topic: Crime Busters B
Replies: 7
Views: 711

Re: Crime Busters B

Maybe?? 1.Loop, whorl, and arch. They are formed when the friction ridges touch the surface of something? 2. I can name one but... By dusting a powder on where the fingerprint was 3. Loops: 65% Whorls: 35% Arches: 5% Sorry about the delay! 1. For the first part, I was looking for something more alo...
by Sapphire
October 3rd, 2019, 6:11 pm
Forum: Question Marathons
Topic: Crime Busters B
Replies: 7
Views: 711

Crime Busters B

I haven't even registered for Science Olympiad yet, but let's get this started! 1. What are the three different types of fingerprints found at crime scenes? How are they formed? 2. What are three different ways to develop latent fingerprints? In which order should they be used if one of the previous...
by Sapphire
September 25th, 2019, 3:55 pm
Forum: Nationals
Topic: Way Too Early Predictions
Replies: 146
Views: 23188

Re: Way Too Early Predictions

AlfWeg wrote:
September 25th, 2019, 9:38 am
Sapphire wrote:
September 24th, 2019, 6:21 pm
Do you guys think Slauson will make it to Nats? 10 people on our team were 8th graders last year...
I thought 11? Or wuz RW not on the team or smth
RW was an alternate. We had four alts I think, three 8th graders and one 7th grader or something.
by Sapphire
September 24th, 2019, 6:21 pm
Forum: Nationals
Topic: Way Too Early Predictions
Replies: 146
Views: 23188

Re: Way Too Early Predictions

Do you guys think Slauson will make it to Nats? 10 people on our team were 8th graders last year...
by Sapphire
September 24th, 2019, 6:07 pm
Forum: Posting Games
Topic: What's on your CTRL+V?
Replies: 643
Views: 62264

Re: What's on your CTRL+V?

umichscioly.org

Huh.
by Sapphire
September 24th, 2019, 5:49 pm
Forum: Regionals & States
Topic: Michigan 2020
Replies: 102
Views: 10288

Re: Michigan 2020

Time for very very early predictions! Is this the year where we get to see two troys at nats? I believe that if Troy fixes their builds and attends all their events at states then they can snatch a bid for sure. Let me know what y’all think. Don't know about Slauson this year. I'm hoping for 2nd, b...

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