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.
Electron arrangement
Universal indicator
Negative ions
Positive ions
Valence shell
Litmus paper
Ions table
Electron
compound
Neutral
Neutron
Alkali
Period
Proton
Group
Base
Acid
Ion