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Chemistry Crossword

HAPPY MOLE DAY 
- By Abby
Across
This type of mixture has visibly different parts
Rusting is a _______ change
A positive ion
This type of property DOES depend on how much material is present
Center of an atom containing protons and neutrons
The sum of the atomic masses of all the atoms in a compound is the ______ mass
Down
This type of mixture does NOT have visibly different parts
He came up with the SI unit moles
Negatively charged particle found orbiting the nucleus of an atom
Mass number is neutrons plus ____
This type of property does NOT depend on how much material is present
An ice cube melting is a ______ change
When converting ____ to moles, you use 22.4?/1mol
A negative ion
Heaviest particle found inside the atom