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atom the smallest part of an element which still has the properties of that element
parts of an atom protons, electrons, neutrons
periodic table Shows the elements in order of increasing atomic numbers
groups vertical columns of elements
periods horizontal rows of elements in the periodic table
ionic bond the force of attraction between oppositely charged ions in a compound
ion a charged atom or group of atoms
covalent bonding this occurs when atoms share electrons
shell an orbit for electrons
compound 2 or more elements combined
molecule 2 or more atoms combined
isotopes atoms of same elements which have different number of neutrons
alkali metals element which react with water
unstable atoms atoms with just one out of x electrons its is outer shell
stable atoms atoms with a full outer shell
atomic number number of protons and electrons of that atom
Created by: Tomasz