Atoms & The periodic table Crossword puzzle

The basic unit of a chemical element
A negatively charged submatic particle that bound the nucleus
The center of an atom, consisting of protons and neutrons
A positively charged submatic particle found in the nucleus of every atom
A subatomic particle that is found in every nucleus of an atom and has no charge.
The number of valence electrons of an atom determines its______
An element that has the most amount of valence electrons is _____
The distances from the nucleus of an atom where electrons may be found
The name given to a horizontal row of the periodic table
The mass of a single atom of a chemical element
A chemical element that is an effective conductor of electricity and heat
The family name of group 18 in the periodic table
An element that is not a metal is called a ____ element
A model consisting of a small, dense nucleus surrounded by orbiting electrons
Has the properties of both metals and non-metals