Summary: A large bulb containing bromine shows the three phases.
Hazards: Toxic gas, strong oxidant.
Large sealed bulb containing bromine vapor
Tray of dry ice
A large bulb of bromine is placed in dry ice so that it solidifies. As the bulb warms the bromine liquefies and bromine gas fills the bulb.
Discussion: Mp = -7.2 oC; Bp = 58.8 oC