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Crime Busters B

Posted: June 16th, 2016, 10:00 pm
by bernard

Re: Crime Busters B

Posted: November 26th, 2016, 4:23 pm
by drcubbin
Are we using Logol's for the KI Solution?

Re: Crime Busters B

Posted: November 26th, 2016, 6:19 pm
by Unome
drcubbin wrote:Are we using Logol's for the KI Solution?
To the best of my knowledge, the KI solution mentioned in the rules is Lugol's solution.

Re: Crime Busters B

Posted: November 27th, 2016, 8:06 am
by drcubbin
Much appreciated!

Re: Crime Busters B (Zinc Reaction in HCl and iodine)

Posted: January 2nd, 2017, 9:42 pm
by biojameskim2002
Hi all,

I was just wondering how zinc reacts in HCl and iodine. After research online, i found there is a lot of fizz when mixed with HCl, but when I tried that with my own personal tools, there seems to be little to no reaction. What may be the problem in this situation?

Re: Crime Busters B (Zinc Reaction in HCl and iodine)

Posted: January 2nd, 2017, 11:14 pm
by SenseiSushi
biojameskim2002 wrote:Hi all,

I was just wondering how zinc reacts in HCl and iodine. After research online, i found there is a lot of fizz when mixed with HCl, but when I tried that with my own personal tools, there seems to be little to no reaction. What may be the problem in this situation?
Zinc should react with HCl, but oftentimes this reaction is delayed or does not show up clearly as the HCl provided in competitions is diluted. I don't believe iodine is typically used to identify metals.

Color is usually my go-to when identifying zinc as it has a shiny silver color.

Re: Crime Busters B

Posted: January 5th, 2017, 3:59 pm
by Neharaval
I was wondering if we need to bring all powders and fibers or metals
which has to be tested or they will provide it.

Re: Crime Busters B

Posted: January 5th, 2017, 4:51 pm
by Panda Weasley
Neharaval wrote:I was wondering if we need to bring all powders and fibers or metals which has to be tested or they will provide it.
The event supervisor will provide all of the unknown materials to be provided. The only things you need to bring are listed in the rules.

Re: Crime Busters B

Posted: January 14th, 2017, 8:27 am
by abriddle
Hello- This is the first year I will be participating and was wondering where I can buy a practice kit that would contain everything needed? Thanks

Re: Crime Busters B

Posted: January 14th, 2017, 9:17 am
by egbertghost
abriddle wrote:Hello- This is the first year I will be participating and was wondering where I can buy a practice kit that would contain everything needed? Thanks
You can buy a kit with pretty much everything here https://www.wardsci.com/store/catalog/p ... 470222-058
The only downside is that it is pretty expensive oTL