This printable crossword puzzle on the topic of Elements & Periodic Table has 20 clues. Answers range from 5 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
The "weight" of the atom
The element that makes up 78% of our atmosphere
Columns of elements are called groups or
Poor conductors of heat and electricity
Is composed of atoms and groups of atoms bonded together
AMU
Each horizontal row of elements
Will react with alkali metals to form shells
These elements are ductile and malleable
Atoms that have more or less neutrons than protons
This element is a metalloid
A pure substance
The number of protons an element has
The electrons in the outer energy level of an atom
Can only be separated by chemical means
Created the first accepted version of the periodic table
Can only be separated by physical means
This element is called the "basis of life"
Is in a family by itself
Colorless gasses that are extremely unreactive