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UNit 3 lesson 1/2

Atom Smallest particle into which an element can be divided and still be the same element.
Electron The negatively charged charged particles later become known as electrons
Nucleus A small dense center that has a positive charge and is surrounded by moving electrons
Proton Positively charged particles in nucleus.
Neutron The uncharged particles of the nucleus
Electron Cloud Where the electrons move within an area around the nucleus called the nucleus cloud
Atomic Number The number of protons in the nucleus of an atom is the atomic number of that atom
Mass Number The total number of protons and neutrons in an atoms nucleus
Periodic Table The arrangement of the periodic elements into the same groups
Chemical Symbol is an abbreviation for the elements name
Average Atomic Mass is the weighted average of the masses of all the nutrality
Metal are elements that are shiny and conduct heat and electricity well
Nonmetal are poor conductors of heat and electricity
Mellatoid are elements that have some properties of metals and some properties of nonmetals
Group Each vertical column of elements
Period Each horizontal column in the periodic table
Created by: 18fortmand0127



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