My Crossword Maker Logo
Powered by BrightSprout
Save Status:
or to save your progress. The page will not refresh.
Controls:
SPACEBAR SWITCHES TYPING DIRECTION
Answer Key:
Edit a Copy:
Make Your Own:
Crossword Word Search Worksheet
Rate This Puzzle:
Log in or sign up to rate this puzzle.

Structure of an Atom

Across
the nucleus and all electrons in an atom except the valence electrons
charged atom or group of atoms
equal to the number of protons in a neutral atom
the positively charged particle found in the nucleus
state in which all electrons are at their lowest possible energy level
Down
most of the mass of an atom is here
cannot be decomposed into simpler substances by ordinary chemical means
atoms with the same atomic number but different atomic masses
mass number minus atomic number
the smallest particle of an element that can enter into chemical change