State some physical properties of ethanol.

What are the physical properties of metals?

Write two physical properties of nonmetal.

What are physical properties of non-metals?

State two basic properties of electric charges.

State two basic properties of electric charge ?

State important properties of a normal distribution.

State two characteristics of sodium which are exceptions to the general properties of metal.

The minimum energy required for the electron emission from the metal surface can be supplied to the free electrons by one of some physical processes. What are they.