What does the arrow indicate? What is the meaning of the line crossed by the arrow?
• The arrow indicates a sublimation of graphite to gaseous carbon. The line crossed by the arrow is the sublimation point.
• The arrow indicates a melting of graphite to liquid carbon. The meaning ofthe line crossed by the arrow is the melting point.
• The arrow indicates the freezing of graphite. The line crossed by the arrow is the boiling point.
• The arrow indicates the boiling of graphite to liquid carbon. The meaning of the line crossed by the arrow is the boiling point.