Periodic Table Crossword

What is the smallest unit of matter?
What is called a table of chemical elements ?
What is a characteristic that can be observed without changing it into another substance ?
What is a characteristic of a substance that describes its ability to change into different substances ?
What is found in the central area of atom and is composed of protons and neutrons?
What tells how large an atom is ?
What is negative that is arranged in shells and is relatively charged?
What is positive charged and it determines the elements identity?
Is large with no mass
What has the atom with the same number of protons but different number of neutrons?
contains a central nucleus surrounded by electrons
Has a group of elements with similar chemical properties
Is the most reactive of all the metals has 1 valance electron and has good conductors
Father of atomic theory
concluded that the nucleus contains all the mass of the atom and is positively charged
An element whose properties are intermediate between those of metals and solid nonmetals.
It is used to describe where electrons are when they go around the nucleus of an atom
the total number of protons and neutrons in a nucleus.
any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0
They are reactive nonmetallic elements that form strongly acidic compounds with hydrogen, from which simple salts can be made.