2006-07-23 15:32:56 · 8 answers · asked by elpasio2020 1 in Education & Reference ➔ Homework Help
you're an idiot
2006-07-23 15:39:06 · answer #1 · answered by mamabird 4 · 0⤊ 0⤋
I agree with pezdispencer, it's probably just a safety issue.
Just because something expands or contracts due to change in temperature doesn't mean that the mass (and thus, weight) will change. It just causes the material to expand or contract, but it's still the same stuff, just in a larger or smaller form. Nothing lost, nothing gained, thus no change in mass/weight. Except for perhaps if the process involves evaporation or conencation, where it will lose mosture or gain it, and as pez said, that wouldn't be very significant.
2006-07-23 22:45:14 · answer #2 · answered by Paul 1 · 0⤊ 0⤋
WTF - look at these answers, this site is crazy!!!
Any tenth grade chemistry student knows that the temperature of something has absolutely NOTHING to do with it's mass or weight!!!!!
It isn't important to cool something to room temperature before weighing it. Whoever told you this is an idiot. Try immersing a hockey puck in boiling water. Now, dry it off and weight it. Then freeze it and weight it again. There is no difference! Not by even one iota!!
Tell the person who told you this to give themself a smack.
2006-07-24 01:57:24 · answer #3 · answered by jsprplc2006 4 · 0⤊ 0⤋
I think it's mainly just a safety issue. Hot 'something' can burn you.
Depending on the 'something' you could lose some weight in the cooling process with the evaporation of moisture, but it likely would not be significant.
2006-07-23 22:35:18 · answer #4 · answered by pezdispenserwisdom 3 · 0⤊ 0⤋
most items expand when hot to get an accurate measure of weight it needs to be at room temperature.
2006-07-23 22:39:39 · answer #5 · answered by angel b 2 · 0⤊ 0⤋
Something has a different mass, and as a result, a different weight at different temperatures.
2006-07-23 22:35:16 · answer #6 · answered by Stuart 7 · 0⤊ 0⤋
i think its because if something is heated it may expand causing it to weigh more than normal.
2006-07-23 22:36:01 · answer #7 · answered by Anonymous · 0⤊ 0⤋
listen to stuart above. it's all about chemistry.
2006-07-23 22:36:50 · answer #8 · answered by Anonymous · 0⤊ 0⤋