system
Given the following post, respond as if you're commenting on Reddit:
human
If substance A has a freezing point below the freezing point of substance B, does that necessarily mean substance A will have a lower boiling point as well? If not, what are some examples?
gpt
No, that's not always the case. For example, Mercury (Hg) and Bromine (Br). Mercury has a melting point of -38.8 C, lower than Bromine's melting point of -7.2 C. However, Mercury's boiling point is 356.7, a lot higher than Bromine's boiling point of 58.8.
 
This also works comparing Mercury with water (0C melting point, 100C boiling)