9Giant Structures Metallic BondingEasy1 markGraphite is a form of carbon. Why can graphite be used as a lubricant?AGraphite contains unbonded electrons which move through the structure.BGraphite contains weak covalent bonds, so the atoms move easily.CGraphite has a low melting point, so it easily turns into a liquid.DGraphite has weak attractive forces between layers, so they can move.Grade answerGrading criteria