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SCIENCE
Matter and Elements Test
14
Science
6th Grade
11/13/2012

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Term
atom
Definition
basic building blocks of all matter
Term
atomic mass
Definition
protons + neutrons =
Term
atomic number
Definition
number of protons
Term
stable atom
Definition

number of protons equals the number of electrons

 

PROTONS = ELECTRONS

Term
elements
Definition
pure substance made up of one type of atom and is found on the periodic table
Term
symbols
Definition
an element is written by using these
Term
Elements always have a
Definition
capital letter
Term
Elements on the periodic table are
Definition
organized by their atomic number
Term
Elements differ because of the
Definition
number of protons they have
Term
compound
Definition
made up of two or more kinds of atoms
Term
compounds are written using
Definition
chemical formulas
Term
Elements combine in a _________  _________ to form compounds
Definition
chemical reaction
Term
physical change
Definition
the shape or phase of the material may change, but the material itself is the same before and after the change.  The change CAN BE UNDONE
Term
chemical change
Definition
you have two or more molecules interact and create a new molecule or two. New substances are formed and the change CAN NOT BE UNDONE
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