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5.4 Matter
VA Science SOL 5.4 Vocabulary
19
Science
5th Grade
04/20/2013

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Term
atom
Definition
the smallest unit of an element
Term
compound
Definition
a substance made of at least two different elements bonded together
Term
density
Definition
the measure of how much mass is contained in matter and how tightly the molecules are packed
Term
electrons
Definition
parts of an atom with a negative charge that swirl around the outside of the nucleus
Term
element
Definition
matter made of only one type of atom
Term
gas
Definition
matter that has molecules that move freely past each other with a lot of space between them
Term
gravity
Definition
a pulling force between objects; the more massive the object, the stronger the pull
Term
liquid
Definition
matter that has molecules that are loosely packed together and can flow past each other
Term
mass
Definition
a measure of the amount of matter in an object
Term
matter
Definition
anything that has mass and takes up space
Term
mixture
Definition
a combination of two or more substances that are bonded and can be separated by physical methods
Term
molecule
Definition
a combination of atoms bonded together; the smallest unit of a compound
Term
neutrons
Definition
parts of an atom that have no charge and are part of the nucleus
Term
nucleus
Definition
the central portion of an atom made of protons and neutrons
Term
protons
Definition
parts of an atom with a positive charge that are part of the nucleus
Term
solid
Definition
matter that has molecules packed together so they hold their shape and do not flow
Term
solution
Definition
a mixture in which one substance dissolves in another
Term
volume
Definition
the amount of space matter takes up
Term
weight
Definition
a measure of the gravitational pull on an object
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