melody2k6 wrote:We don't have the test packet.
This wasn't on the test this year, but here is what they wanted in '06-
Put a set amount of the powder in a beaker and weigh it. Leave it alone for at least 15 minutes and then weigh it again. If there is a change is weight, then it is likely hygroscopic; if not, then it isn't. However, this process can take a fair amount of time if you have a shared triple beam balance (when you have so little time to start with), so it is probably worth considering just writing down something to the effect of "The powder clumps". This simple would receive AT LEAST 3-4 points anywhere, though most Invitational/Regional/State supervisors would probably give it 5, and would take far less time.