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Atom Vocabulary
Atom Words
10
Science
6th Grade
11/12/2010

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Term
Matter
Definition
anything that has mass and takes up space
Term
Atom
Definition
Smallest particle of an element that has all the properties of that element
Term
Proton
Definition
Subatomic particle that has a positive charge and is found in the nucleus of an atom
Term
Neutron
Definition
subatomic particle with no electric charge that is found in the nucleus of an atom
Term
Electron
Definition
negatively charged subatomic particle found in an area outside the nucleus of an atom
Term
Nucleus
Definition
small, dense positively charged center of an atom
Term
Atomic Number
Definition
number of protons in the nucleus of an atom
Term
Atomic Mass
Definition
sum of the protons and neutrons in the nucleus of an atom
Term
Electron Cloud
Definition
space in which electrons are likely to be found
Term
Energy Level
Definition
most likely location in an electron cloud in which an electron can be found
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