This printable crossword puzzle on the topic of Elements & Periodic Table has 25 clues. Answers range from 3 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
the center of an atom
have a positive charge
have a negative charge
have a neutral charge
the place where the most probability of electrons will be
how many protons an atom has
atoms of the same elements that have a different number of neutrons
atomic mass unit
formed when an atom loses or gains one or more electrons
formed when there are more electrons than protons
formed when there are more protons than electrons
horizontal lines on the periodic table
vertical lines on the periodic table
elements that conduct electricity and heat well and have a shiny appearance
poor conductors of heat and electricity and have a dull appearance
elements that have properties of both metals and nonmetals
very reactive group
less reactive then alkali metals
malleable and more reactive than most other metals
very reactive nonmetals that easily form compounds called salts
almost never react with other elements
rare earth metals
all radioactive
the process by which unstable atoms become more stable
formed when radioactive decay emits particles and radiations