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Chemistry Crossword

Across
The amount of mass per unit volume
Nothing like it
Anything that takes up space
A subatomic particle with no electric charge
Smallest part of matter
A chemically bonded number of atoms that are electrically neutral
Something you can observe without changing matter
The state of matter
A positive subatomic particle
How much matter in an object
Mixing a substance evenly into another
The ability of a substance to dissolve in another
Center of an atom
The study of matter
Down
A unit of measure for temperature based upon an absolute scale
How much space matter takes up
A substance made with only one kind of atom
A substance with a composition that may vary
A substance that increases the rate of a chemical reaction without changing
Something used to describe matter
Something you observe
A negative subatomic particle
The force between atoms
Material of the definite chemical composition
The amount of product produced during a chemical reaction
Particles that fill their container though have no definite shape or volume