Define "drift" when using a balance.
1.9) What is the melting point useful for?
1.11) Does the term melting point refer to an exact temperature or to a range?
1.13) When should you start recording the temperature?
1.15) When looking at melting point data reported in books, a single number is given. Does it refer to the upper or the lower temperature of the range?
1.17) What are the main guidelines to follow in order to ensure accurate determination of a melting point?
1.19) What is a good refluxing solvent?
1.21) What is the disadvantage of using a very small heating mantle for refluxing?