Write two physical properties each.

A. Diamond

B. Charcoal

C. Fullerene

A. Two physical properties of diamond are:

1. Diamond is the hardest natural substance found in the earth and does not dissolve in any solvent.

2. Diamond does not show any change when treated with acids/bases.

B. Two physical properties of Charcoal are:

1. Charcoal when burnt produces bad heat and energy. It is also a bad conductor of electricity.

2. It is highly porous substance and has low density.

C. Two physical properties of Fullerene are:

1. Fullerenes dissolve in solvents like carbon disulphide (CS₂) and chlorobenzene.

2. One molecule of fullerene contains around 30 to 900 carbon atom.