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Atoms and Ptable

Atoms and the Periodic table

TermDefinition
Anion An atom that has more electrons than protons
JJ Thompson the first person to show evidence of electrons
Metals Most of the elements on the periodic table
Inert Atoms that are resistant to change or reaction
Argon The element that contains 18 protons 22 neutrons and 18 electrons
Proton The positively charged subatomic particle
Valence shell The outer ring from an electron cloud
Positive The electrical charge of a Proton
Electron The smallest of the three subatomic particles
Chlorine An atom with three energy rings and 7 valence electrons
Negative The electrical charge of an Electron
Isotopes Atoms of the same element with different numbers of neutrons
Valence electrons The dots on a Lewis dot structure represent these...
Valence The chemical reactivity of an element is determined by its...
Bohr Model The type of model used to show the location of atoms around the nucleus
Family A column on the periodic table
Democritus The Greek philosopher who was first to have the idea of the atom
Element The simplest pure substance containing only one type of atom
Rutherford The first person to show that atoms were mostly empty space
Alkali metals The most reactive elements on the periodic table
Electron cloud the area of the atom that fills the greatest amount of its volume
Noble Gasses The chemical family with full valence shells
Malleable The ability of metals to be hammered into thin sheets
Atoms Small pieces that are the building blocks of all matter
Compound Pure substance made of 2 or more different types of atoms chemically bonded.
Created by: coach_fletcher