Can't Judge a Powder B

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Re: Can't Judge a Powder B

Postby Cheesy Pie » March 9th, 2011, 2:10 pm

I'd probably be on varsity if I didn't vomit during the tryouts one day :(
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Re: Can't Judge a Powder B

Postby tying15 » March 9th, 2011, 2:23 pm

What does hygroscopic mean?
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Re: Can't Judge a Powder B

Postby dholdgreve » March 9th, 2011, 3:57 pm

What does hygroscopic mean?
Hygroscopy is the ability of a substance to attract and hold water molecules from the surrounding environment through either absorption or adsorption with the adsorbing or absorbing material becoming physically 'changed,' somewhat: by an increase in volume, stickiness, or other physical characteristic of the material as water molecules become 'suspended' between the material's molecules in the process. While some similar forces are at work here, it is different from capillary attraction, a process where glass or other 'solid' substances attract water, but are not changed in the process, e.g. water molecules becoming suspended between the glass molecules.
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Re: Can't Judge a Powder B

Postby EpicFailure » March 9th, 2011, 8:19 pm

How would you tell if a powder is hygroscopic?

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Re: Can't Judge a Powder B

Postby robotman » March 9th, 2011, 8:26 pm

whether or not it clumps.
If it is clumped in the container they give you of it it would obsorbe ambient H2O
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Re: Can't Judge a Powder B

Postby geekychic13 » March 10th, 2011, 1:03 pm

what do you mean when you say it will absorb ambient water? :D
whether or not it clumps.
If it is clumped in the container they give you of it it would obsorbe ambient H2O
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Re: Can't Judge a Powder B

Postby robotman » March 10th, 2011, 1:31 pm

what do you mean when you say it will absorb ambient water? :D
whether or not it clumps.
If it is clumped in the container they give you of it it would obsorbe ambient H2O
It was a reference to the definition of Hygroscopy
What does hygroscopic mean?
Hygroscopy is the ability of a substance to attract and hold water molecules from the surrounding environment through either absorption or adsorption with the adsorbing or absorbing material becoming physically 'changed,' somewhat: by an increase in volume, stickiness, or other physical characteristic of the material as water molecules become 'suspended' between the material's molecules in the process. While some similar forces are at work here, it is different from capillary attraction, a process where glass or other 'solid' substances attract water, but are not changed in the process, e.g. water molecules becoming suspended between the glass molecules.
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Re: Can't Judge a Powder B

Postby asdf1231 » March 22nd, 2011, 11:30 am

how do you place in this event?!! i've been doing this for around two years and i just dont seem to be able to place :(
even when i thought i got 113/120, i still got fifth place! this event is so easy that its hard to beat others out for a medal

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Re: Can't Judge a Powder B

Postby rockernerdzgurl » March 23rd, 2011, 3:32 pm

how do you place in this event?!! i've been doing this for around two years and i just dont seem to be able to place :(
even when i thought i got 113/120, i still got fifth place! this event is so easy that its hard to beat others out for a medal
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Re: Can't Judge a Powder B

Postby Cheesy Pie » March 25th, 2011, 2:08 pm

Also look for superficial things like the bag number. We seriously got that question.
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