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Atoms and Ptable

Atoms and the Periodic table

Anion An atom that has more electrons than protons
JJ Thomson 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 Gases 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.
Proton What is the positive subatomic part of an atom?
Nucleus The part of the atom that gives it its mass
Metalloids Elements that have properties of metals and non-metals
Electron The subatomic particle flying around the nucleus of an atom
Metals Elements to the left of the zigzag line on the periodic table
Period Elements who’s atoms all have the same # of energy rings
Molecule At least 2 atoms chemically bonded
Compound 2 or more elements chemically bonded
Valence The # of electrons on the outer energy level of an atom
Carbon This element is called the basis of life
Neutral What type of charge does a neutron have?
Malleable Metals can be hammered in to thin sheets because they are __________
Ductile Metals can be drawn in to thin wires because they are __________
Family Elements found in a column on the periodic table
Periodic Something with a regular repeating pattern is also called __________
Democritus The first person to propose the idea of the atom
Rutherford His experiment showed that atoms are mostly empty space
Thomson His experiment gave evidence of electrons
Positive A nucleus has this type of charge
Isotope Atoms of the same element with different #’s of neutrons
Mixture 2 or more substances mixed but not chemically bonded
Noblegasses Elements in family 18 are called _________
Atom Greek word that means indivisible and indestructible
Alkalimetals The family with the most highly active solids
Hydrogen The only gaseous element to have just one valence electron
Created by: coach_fletcher
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