Periodic Table Crossword

What is the smallest particle of an element
What did Keith Enevoldsen create ?
Any property used to characterize matter and energy and their interactions
A property used to characterize materials in reactions that change their identity
A negatively charged subatomic particle found in the energy level of an atom
A positively charged subatomic particle in the nucleus of an atom
A neutral subatomic particle in the nucleus of an atom
The center of an atom; made up of protons and neutrons
The process of adding electrons to or removing electrons from an atom or group of atoms
The number of protons in the nucleus of an atom
The total number of protons and neutrons in the nucleus of an atom
Any atoms having the same number of protons but a different number of neutrons
The elements thta are good conductors of heat and electricity
the elements that are usually poor conductors of heat and electricity
An element that has properties of both a metal and nonmetal
The weighted average of the masses of all naturally occuring isotopes of an elementmetal
A word made when you join two or more words to form a new word
Composed of atoms that have the same atomic number
What is group 1 called ?
They are reactive nonmetallic elements that form strongly acidic compounds with hydrogen, from which simple salts can be made.