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-a substance
-can't be broken down into simpler substances
element
sample of matter with DEFINITE chemical and physical properties
pure substance
element that is shiny and conducts heat and electricity
metal
element that conducts heat and electricity POORLY
non metal
elements that have properties of
BOTH
metals and nonmetals
metalloid
-substance made up of atoms of TWO or MORE different elements
-joined by chemical bonds
compound
smallest unit of an element
atom
subatomic particle with POSITIVE charge found in nucleus
proton
-subatomic particle with NO CHARGE
-found in nucleus
neutron
-subatomic particle that has a NEGATIVE charge
electron
SUM of the numbers of protons AND neutrons
mass number
number of protons in the nucleus
atomic number
atom's central region
nucleus
Author
AmyChosewood
ID
106927
Card Set
Science Terms
Description
vocabulary words
Updated
2011-10-06T17:49:36Z
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