Crime Busters B

Locked
User avatar
Tailsfan101
Exalted Member
Exalted Member
Posts: 758
Joined: April 14th, 2017, 4:33 pm
Division: C
State: ID
Location: Philippians 3:20a "For our citizenship is in heaven"
Has thanked: 21 times
Been thanked: 15 times
Contact:

Re: Crime Busters B

Post by Tailsfan101 » January 24th, 2018, 7:00 am

Also, zinc has a higher density and fizzes with HCl.
2016-2020 Treasure Valley Homeschool Wiki
2021 possible events: Disease Detectives, GeoLogic Mapping, Designer Genes, Protein Modeling, Codebusters, Write It Do It

Mini-Inv./Nebo/North JH
DD: 1/3/-
GLM: 1/1/-
DG: 1/1/-
PM: 1/2/1
WIDI: 2/-/-
Code: 2/-/-

Assassinator for games #118 and 136

Benewcomb
Member
Member
Posts: 38
Joined: October 28th, 2017, 5:16 am
Division: B
State: IN
Location: Hauser Jr Sr High School
Has thanked: 0
Been thanked: 0

Re: Crime Busters B

Post by Benewcomb » January 31st, 2018, 8:34 am

Would we have to know the difference between types of plastic? Because I haven’t gotten to check if we have that information in our binder.
It’s gonna be me!

User avatar
Tailsfan101
Exalted Member
Exalted Member
Posts: 758
Joined: April 14th, 2017, 4:33 pm
Division: C
State: ID
Location: Philippians 3:20a "For our citizenship is in heaven"
Has thanked: 21 times
Been thanked: 15 times
Contact:

Re: Crime Busters B

Post by Tailsfan101 » January 31st, 2018, 2:04 pm

Benewcomb wrote:Would we have to know the difference between types of plastic? Because I haven’t gotten to check if we have that information in our binder.
Plastics you need to differentiate:
PETE
HDPE
PVC
LDPE
PP
PS
PMMA
2016-2020 Treasure Valley Homeschool Wiki
2021 possible events: Disease Detectives, GeoLogic Mapping, Designer Genes, Protein Modeling, Codebusters, Write It Do It

Mini-Inv./Nebo/North JH
DD: 1/3/-
GLM: 1/1/-
DG: 1/1/-
PM: 1/2/1
WIDI: 2/-/-
Code: 2/-/-

Assassinator for games #118 and 136

Benewcomb
Member
Member
Posts: 38
Joined: October 28th, 2017, 5:16 am
Division: B
State: IN
Location: Hauser Jr Sr High School
Has thanked: 0
Been thanked: 0

Re: Crime Busters B

Post by Benewcomb » January 31st, 2018, 3:28 pm

Tailsfan101 wrote:
Benewcomb wrote:Would we have to know the difference between types of plastic? Because I haven’t gotten to check if we have that information in our binder.
Plastics you need to differentiate:
PETE
HDPE
PVC
LDPE
PP
PS
PMMA
K thanks. I’m on it.
It’s gonna be me!

pandascienceolympiad
Member
Member
Posts: 5
Joined: January 12th, 2018, 3:43 pm
Has thanked: 0
Been thanked: 0

Re: Crime Busters B

Post by pandascienceolympiad » February 4th, 2018, 2:07 pm

Birdmusic wrote:Hi, I'm new to this event (and chemistry in general), so I have a couple of questions.

1) When my partner and I mixed iodine with flour mixed with water or cornstarch mixed with water, it didn't turn dark blue, any ideas why? We tried increasing the amount of water, flour/cornstarch, and iodine, but nothing happened still.

2) If one powder in a mixture dissolved and another didn't, how would you know? Wouldn't the water just be cloudy if one dissolved? Also, how would you know whether only one thing reacted with the HCl and iodine or both reacted?
1) Try to not mix the flour or cornstarch in water first. Also, your solutes and solvents might be old, try using newer ones.
2) Try looking at the mixture under a microscope first, and try and come up with possible powders it could be based on your results

Birdmusic
Member
Member
Posts: 94
Joined: October 22nd, 2017, 9:33 am
Division: C
State: CA
Location: In the Milky Way Galaxy
Has thanked: 0
Been thanked: 0

Re: Crime Busters B

Post by Birdmusic » February 6th, 2018, 6:48 pm

pandascienceolympiad wrote:
Birdmusic wrote:Hi, I'm new to this event (and chemistry in general), so I have a couple of questions.

1) When my partner and I mixed iodine with flour mixed with water or cornstarch mixed with water, it didn't turn dark blue, any ideas why? We tried increasing the amount of water, flour/cornstarch, and iodine, but nothing happened still.

2) If one powder in a mixture dissolved and another didn't, how would you know? Wouldn't the water just be cloudy if one dissolved? Also, how would you know whether only one thing reacted with the HCl and iodine or both reacted?
1) Try to not mix the flour or cornstarch in water first. Also, your solutes and solvents might be old, try using newer ones.
2) Try looking at the mixture under a microscope first, and try and come up with possible powders it could be based on your results
Thank you! We got a new KI, and it seems to work much better.
I like birds.
R/S
Crime Busters: 1/2
Disease Detectives: 1/5
Hovercraft: 11/9
GGSO/R/S
Disease Detectives: 6/3/10
Circuit lab:11/4/-
Sounds:3/2/1
Protein: -/-/6
GGSO/R/S
Disease Detectives: 2/-/-
Circuit lab 6/-/-
Sounds: 4/-/-
Protein:9/-/-

User avatar
lamppost
Member
Member
Posts: 8
Joined: November 27th, 2017, 12:52 pm
Division: C
State: VA
Has thanked: 0
Been thanked: 0

Re: Crime Busters B

Post by lamppost » February 7th, 2018, 1:09 pm

I'm also new to this event and I'd like to know-are we allowed to put charts on our sheets? Or should we not waste pages on that and fill it with other useful info?
Divison C Science Olympiad competitior

shrewdPanther46
Member
Member
Posts: 437
Joined: October 9th, 2017, 6:25 pm
Division: C
State: NJ
Has thanked: 0
Been thanked: 0

Re: Crime Busters B

Post by shrewdPanther46 » February 7th, 2018, 1:53 pm

There is nothing saying you cannot have charts on your cheat sheet. You can put whatever you want...

User avatar
Tailsfan101
Exalted Member
Exalted Member
Posts: 758
Joined: April 14th, 2017, 4:33 pm
Division: C
State: ID
Location: Philippians 3:20a "For our citizenship is in heaven"
Has thanked: 21 times
Been thanked: 15 times
Contact:

Re: Crime Busters B

Post by Tailsfan101 » February 7th, 2018, 3:02 pm

lamppost wrote:I'm also new to this event and I'd like to know-are we allowed to put charts on our sheets? Or should we not waste pages on that and fill it with other useful info?
2018 Crime Busters rules wrote:...Teams may bring five double-sided 8.5" x 11" sheets of paper with information from any source.
2016-2020 Treasure Valley Homeschool Wiki
2021 possible events: Disease Detectives, GeoLogic Mapping, Designer Genes, Protein Modeling, Codebusters, Write It Do It

Mini-Inv./Nebo/North JH
DD: 1/3/-
GLM: 1/1/-
DG: 1/1/-
PM: 1/2/1
WIDI: 2/-/-
Code: 2/-/-

Assassinator for games #118 and 136

Polarrr
Member
Member
Posts: 49
Joined: October 12th, 2017, 7:47 pm
Has thanked: 0
Been thanked: 0

Re: Crime Busters B

Post by Polarrr » February 14th, 2018, 6:53 am

lamppost wrote:I'm also new to this event and I'd like to know-are we allowed to put charts on our sheets? Or should we not waste pages on that and fill it with other useful info?
I think that putting charts for helping with powder and fiber identification would be useful... you do have five sheets front and back and you'd be surprised how much you can fit on there.

Locked

Return to “2018 Lab Events”

Who is online

Users browsing this forum: No registered users and 1 guest