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Atom Words & Phrases Crossword Puzzle

Across
_______ with more energy orbit farther away from the nucleus.
The ______ is the number of protons an atom has.
______ are NOT made up of other particles.
______ are electrons in the outermost energy level.
The ______ is made of protons and neutrons.
Down
______ are made up of other particles.
Protons + neutrons = ______
_______ are positively charged particles that determine the type of atom.
The ______ is the region where electrons are most likely to occur.
A(n) ______ is the same atom with a different amount of neutrons.