the reason that it is not advisable to measure a sample in a hot test tube.
2006-12-09 23:03:46 · 6 answers · asked by bunso 1 in Science & Mathematics ➔ Physics
It's not lighter when it's hot. It may have a higher molecular speed (gas) or lower density (liquid), but it won't get lighter unless you lose some of it (evaporation, boiling). But those molecules just go somewhere else, they don't disappear.
2006-12-09 23:08:34 · answer #1 · answered by ladybugewa 6 · 0⤊ 0⤋
Gas expands making low pressure causing lift. Liquid turns to vapor. Vapor expands making low pressure causing lift. Solids expands with no weight lost. The only lost would come for the moisture on the surface of the solid not from the solid. If the solid is porous the moisture inside the solid will evaporate make the solid to lose weight. Burning solids, gases, and liquids Will consume the material causing weight lose also. The three rules Expansion, evaporation, and consumption.
2006-12-10 07:39:08 · answer #2 · answered by atkinsonline 2 · 0⤊ 0⤋
An object can't be lighter when it is hot. Mass of an object can't change.
2006-12-10 07:08:43 · answer #3 · answered by Nabila 2 · 0⤊ 0⤋
because the water evaporated.... and the condensation process takes place...
2006-12-10 07:06:09 · answer #4 · answered by bugi 6 · 0⤊ 0⤋
it has lower density when it's hot.
2006-12-10 07:06:30 · answer #5 · answered by Al-Gore 1 · 1⤊ 0⤋
If that was supposed to be funny please put it in Jokes and Riddle.
(plese don't mind me, bad mood)
2006-12-10 07:07:54 · answer #6 · answered by Anonymous · 0⤊ 0⤋