Boiling Point, Melting Point, Viscosity, Surface Tension. Decrease: Vapor Pressure.
A. A pure chemical substance consisting of one type of atom
Simply look at the periodic table and fill in what you know based on the table
The number of protons = atomic number
The number of electrons, Which is the same as the atomic number for atoms.
The number of valence electrons that is given by the group that the element is in, the top number of each column in the periodic table.
