This printable word search puzzle contains 18 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
chemicalreaction
chemicalformula
valenceelectron
chemicalchange
chemicalsymbol
physicalchange
atomicnumber
covalentbond
massnumber
ionicbond
compound
electron
molecule
element
neutron
nucleus
proton
atom