Boiling point is temperature at which liquid changes to gas. Boiling point depends on pressure and substance's latent heat of vaporization. Water's boiling point is 99.97°C at sea level
Boiling point is the temperature at which a liquid begins to turn into gas. Melting point is the temperature at which a solid begins to turn into a liquid. Particle interactions determine the strength of forces between them
Vapor pressure forms when liquid molecules escape into gas phase above surface. Evaporation occurs when molecules gain enough energy to overcome liquid forces. Condensation happens when vapor molecules collide with liquid surface. Dynamic equilibrium occurs when evaporation and condensation rates are equal
Pure crystalline solids have characteristic melting points measured to 0.1°C. Melting point of solid should be same as freezing point of liquid. Supercooled liquids can form without solidifying due to regular particle structure. Melting points help identify compounds and determine substance purity
Melting point is the temperature at which solid becomes liquid. Melting point varies with pressure and is specified at standard pressure. Substances can be cooled below freezing point without solid formation
Boiling point occurs when liquid's vapor pressure equals surrounding pressure. Normal boiling point is at 1 atmosphere pressure. Standard boiling point defined by IUPAC as 1 bar pressure