I have two questions. Fristly, why is it incorrect to speak of a melting point? Is it because the impurities in a sample will have various melting points and therefore you should use the term melting range instead? And secondly, what will happen if the melting block is heated too rapidly? What...

Four test tubes, with unknowns labelled A B C and D contain substances which have approximately the same melting range How could you prove that the test tubes contain four different compounds? I was thinking that you could purify the samples to ensure that the similar melting ranges for some...

What is the melting point of wax used to make candles? Please tell me somebody...

Mercury has a melting point of -38.87 °C (234.28 °K, -37.966 °F). I also find conflicting information about it's freezing point. I see some sites saying it's freezing point is the same as it's melting point, but others say it freezes at -78 °F. ... so what happens to Mercury when it "melts"?

Given that the melting point of water at 218 atm is 1.61 Celsius degree,what is the melting point of water at 0.5 atm? :) Can anyone show me step by step for the calculation? :D Thanks a lot to anyone who help me to solve the problem.your help is most appreciated. :) :)