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All About Atoms

Name_________________________________

Period_________________
Across
Found in the nucleus and has a positive charge
Where electrons can be found
The chemical symbol for Sodium
The very center of an atom
3 basic parts of an atom
Building block of matter
Particle with a negative charge
A pure substance that cannot be chemically broken down
Down
Represented by the symbol H on the Periodic Table of Elements
Has definite and constant composition
A state of matter that has a definite shape
Greek philosopher who discovered atoms
A state of matter that fills every container it is in
Subatomic particle without any electrical charge
A pure substance made up of only one type of atom
Anything that has mass and takes up space