Elements and compounds Crossword

This printable crossword puzzle has 16 clues. Answers range from 3 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Is a single particle.
Is a group of elements stuck together.
The compound formula for water.
This chemical is important for our bodies.
NaCl.
H2O2
A singlar element that is a gas at room temperature and is used for balloons.
Find what C6H12O6 is.
Is used in cooking and is the formula NaHCO3.
Has pottasium and iodine. Also is poisonous.
One of the most common elements.
Chemical symbol Hs.
Is in the top 20 atomic numbers, is used for lighting signs and is a gas at room temperatutre.
Is a poisonous chemical and the atomic number is prime. The relative atomic mass is 35.45.
Na is the chemical symbol.
CH4 is the formula