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Re: Science Crime Busters B
Posted: April 21st, 2010, 3:44 pm
by haven chuck
The
Science Crime Busters Wiki has fairly reliable information, though it is a wiki, so it cannot be trusted 100%. however, since it's made by science olympians, the wiki is usually one of the best sources, and almost always reliable.
Re: Science Crime Busters B
Posted: April 23rd, 2010, 10:02 am
by icyfire
The 2010 rules for Science Crime Busters don't say anything about this, and though my "gut feeling" tells me otherwise, I still have to ask: Are we allowed to test the liquids with any reagents event supervisors provide such as dH2O, HCl, and Iodine? So far I have only wafted the liquids and not mixed them with anything...though i do realize that i can't just mix the liquids in their given containers....so could we pour a little bit of the substance into a reaction plate then mix them?
Re: Science Crime Busters B
Posted: April 23rd, 2010, 12:22 pm
by Phenylethylamine
icyfire wrote:The 2010 rules for Science Crime Busters don't say anything about this, and though my "gut feeling" tells me otherwise, I still have to ask: Are we allowed to test the liquids with any reagents event supervisors provide such as dH2O, HCl, and Iodine? So far I have only wafted the liquids and not mixed them with anything...though i do realize that i can't just mix the liquids in their given containers....so could we pour a little bit of the substance into a reaction plate then mix them?
Yes, you can use the given reagents to test the liquids. In some cases, you will even be given a dropper to help you get them into the wells of the reaction plate (or they'll just be given to you in a large pipette to begin with).
Re: Science Crime Busters B
Posted: April 23rd, 2010, 1:19 pm
by catman51325
You have to be able to test with the regents. How else would you be able to tell H2O and H2O2 apart.
Re: Science Crime Busters B
Posted: April 24th, 2010, 6:35 am
by icyfire
Phenylethylamine wrote:icyfire wrote:The 2010 rules for Science Crime Busters don't say anything about this, and though my "gut feeling" tells me otherwise, I still have to ask: Are we allowed to test the liquids with any reagents event supervisors provide such as dH2O, HCl, and Iodine? So far I have only wafted the liquids and not mixed them with anything...though i do realize that i can't just mix the liquids in their given containers....so could we pour a little bit of the substance into a reaction plate then mix them?
Yes, you can use the given reagents to test the liquids. In some cases, you will even be given a dropper to help you get them into the wells of the reaction plate (or they'll just be given to you in a large pipette to begin with).
Thanks!
Re: Science Crime Busters B
Posted: April 24th, 2010, 5:53 pm
by disease-detective
Does anybody have a chart that has mixture results? Me an my partner did it, but it didn't save. Thanks
Re: Science Crime Busters B
Posted: April 24th, 2010, 6:01 pm
by haven chuck
haven chuck wrote:The
Science Crime Busters Wiki has fairly reliable information, though it is a wiki, so it cannot be trusted 100%. however, since it's made by science olympians, the wiki is usually one of the best sources, and almost always reliable.
Re: Science Crime Busters B
Posted: May 1st, 2010, 10:18 am
by lakeSUPERIOR
catman51325 wrote:You have to be able to test with the regents. How else would you be able to tell H2O and H2O2 apart.
If you shake them, the H2O2 will make bubbles, water doesnt
Re: Science Crime Busters B
Posted: May 2nd, 2010, 11:04 pm
by suppiechan369
what is a good strategy for identifying mixed powders? does anyone know what kind of mixtures are most common for SCB? thanks!!
Re: Science Crime Busters B
Posted: May 3rd, 2010, 4:49 am
by haven chuck
I've found that they usually like to give two very different powders, namely one that bubbles in HCl with one that doesn't. Try identifying those mixtures, along with ones like Flour and Baking soda (since it looks like cornstarch, and iodine will still turn black because of the Flour).