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Matter Matters

Across
Large body of matter
Basic unit of a chemical element
Substance that flows freely
A pure substance of a type of atom
Power used from physical and chemical resources
Down
Air like fluid
Type of gas that is about 20 percent of the earth's atmosphere
Colorless fluid part of blood
When water solidifies
Electron,proton,neutron
Subatomic particle with the same mass as proton but without the electric charge
An amount of matter