Part of Chemistry (Single Science ... Hydrogen chloride (HCl) has a melting point of -114 o C. This is much lower than the melting point of calcium chloride (CaCl 2), which has a melting point of 772 ...

Identical batches of the crystalline compound appeared to have wildly different melting points. Some batches, he found, melted at temperatures of around 65 degrees Celsius (149 Fahrenheit).

All ionic compounds have a high melting point and boiling ... have the same molecular formula (C 2 H 6 O) yet there is a large difference in boiling points. Ethanol (CH 3 CH 2 OH) is a liquid ...