if i melt gold bullion using acetelyne torch..will the gold loss its weight?

or it will just melt ..but weight the same?

Public Comments

1. Melting is merely a phase transition, in order to lose weight you'd have to increase the temperature to such a point where the gold changed phase again from liquid to gas.
2. Send the GOLD to me and I'll let you know ..Honest.
3. the act of melting with an acetylene torch will make no difference to the weight depends on how pure the gold is and if you get the gold to hot and melt the impurities this will have a weight reduction
4. It any of it boils, yes; even if it doesn't, a little of the liquid gold may evaporate. But my s.w.a.g. is that you'll lose less than one percent of the gold's mass, so go ahead and have your fun. Making some jewelry?
5. Gold is one of the most non-reactive metals that exist. In fact, you'd have to prepare a special concoction called "royal water" to get it to form an ionized solution. So, it will not react with the products from the acetylene torch. However, the acetylene torch can actually reach temperatures of around 3300 to 3500 celcius. This is much higher than the 2000+ celcius boiling point of gold. Naturally the gold will just melt and boil away. Theoretically if you heat it sufficiently long enough, you will end up with less gold and thus with a slightly lower weight.
6. The melting point is 1064 °C (1337 K) and the boiling point is 3080 °C. The vapour pressur is 0,000237 Pa at 1337 K and so the loss is negligible. But you can get an acetylene flame with a temperature about 3300 °C. At this temperature you will definitively lose gold.