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Chem 3


Mendeleev write names of all elements/ found pattern
nucleus the very small center core of an atom
proton partice of an atom in nucleus with a positive charge
neutron partice of an atom in nucleus with no charge
electron partice of an atom that moves rapidly around nucleus with a negative charge
atomic number the number of protons in the nucleus
isotope an atom that differs in the number of neutrons but has the same number of protons
mass number the sum of protons and neutrons in the nucleus of an atom
period row in periodic table
group/family have similar characteristics
nuclear fusion process in which two smaller atomic nuclei are forced togther forming a larger nuclei
plasma a gas like state of matter consisting of free electrons and atomic nuclei
malleable hammered into other shapes
ductile pulled out into a long wire
conductivity transfer heat to another object
reactivity ease which an element combinded with other elements and compounds
corrosion slow destrction of a metal through its reaction with oxygen in the air
ion loss or gain of an electron
isotopes have fewer or more neutrons in the nucleus than normal
compound when atoms of two different elements combinde chemically
covalent chemical bonds occur when two or more atoms combinde sharing electrons to form a molecule
ionic bonds when atoms are held toghter by unlike electrical charges they form
nuclear fusion the process where atomic nuclei of hydrogen are forced togther to create heavier atoms is known as
nuclear fission the process of splitting heavy atoms into lighter atoms
radiation the energy given off by nuclear fission
diatomic molecule formed of two atoms
halogen a family of very reactive elements whose atoms gain or share 1 electron
metalloid a type of element that has some of the charasterics of metals and some non-metals
noble gases a family of un reactive elements whose atoms do not gain,lose or share valence electrons
nonmetal type of element whose physical properties aer generally opposite of that of metals
semiconductor a substance that carries electricity under certain circumstances, but not under others
Created by: amanda2992