History of the Atomic Theory Crossword
This printable crossword puzzle on the topic of Elements & Periodic Table has 11 clues. Answers range from 4 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
is the smallest particle of an element that retains its identity in a chemical reaction
formulated hypotheses and theories to explain his observations
are negatively charged subatomic particles
a glowing beam that traveled from the cathode to the anode
positively charged subatomic particles
subatomic particles with no charge
tiny central core of an atom and is composed of protons and neutrons
number of protons in the nucleus of an atom of that element
total number of protons and neutrons in an atom
atoms that have the same number of protons but different numbers of neutrons
is defined as one twelfth of the mass of a carbon-12 atom
