This printable crossword puzzle on the topic of Elements & Periodic Table has 13 clues. Answers range from 3 to 17 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
The smallest piece of an element that still represents that element.
A particle with one negative charge.
A small area in the center of the atom that contain most of it's mass and positive charge.
An atomic particle that has one positive charge.
A neutral particle that exists in the nucleus of an atom.
An area around an atomic nucleus where an electron is most likely to be located.
The number of protons in an atom of an element.
Atoms of the same element that have different numbers of neutrons.
The number of protons and neutrons in an atom.
The average mass of the element's isotopes.
Elements that spontaneously emit radiation.
The process that occurs when an unstable atomic nucleus changes into another more stable nucleus by emitting radiation.
An atom that is no longer neutral because it has gained or lost electrons.