proton		repeating pattern
elements		smallest part of an element that can be identified as that element
atomic mass		able to be hammered into different shapes
group		substance that cannot be chemically broklen down into simpler substances
nucleus		particle that has a positive charge
ductile		element that has the property of shiny luster,ductility and malleability
energy level		particle that has a negative charge
chemical symbol		particles that has no charge
malleable		number of protons and neutrons in the nucleus of an atom
atom		element that lacks most of the properties of a metal
electron		vertical column of elements in the periodic table
periodic		total mass of the protons and neurons in an atom measured in atomic mass units
nonmetal		number of protons in the nucleus of an atom
metal		shortened way of writing the name of an element
atomic number		center or core of an atom
luster		place in an electon cloud where an electron is most likely to be found
neutron		able to be drawn into thin wires
mass number		the way a material reflects light
period		horizontal row of elements in the periodic table