The periodic table Crossword
This printable crossword puzzle on the topic of Elements & Periodic Table has 10 clues. Answers range from 6 to 21 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
positive ions
negative ions
sum of protons and neutrons
protection of outermost electrons by inner electrons
negatively charged
positively charged
the study of properties, composition and structure of matter
arrangement of electrons around the nucleus of an atom
organized periodic table according to increasing atomic number
Came up with the law of triads
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