Set 1 · 3 puzzles
Chemistry Crossword Sampler 1
Three grids covering decomposition, synthesis and single replacement, each with its answer key.
Get the puzzles →Free printables
Free chemistry puzzles.
Printable crossword puzzles where every across and down answer is a balanced chemical equation. Built for grades 8–10, answer keys included, black and white so they print on any home printer. No signup, no catch — download and photocopy freely for your classroom or kitchen table.
Puzzle sets
Each set is a separate PDF: the puzzle on page one, the answer key on page two.
Set 1 · 3 puzzles
Chemistry Crossword Sampler 1
A new set goes up roughly once a month.
How these work
No word lists and no trivia — the chemistry is the clue.
Every entry balances
Each across and down answer is a complete, balanced reaction. Coefficients and formulae share cells where equations cross.
Self-checking
A wrong coefficient breaks the crossing equation, so students catch their own errors before they reach the key.
Print and go
Letter size, pure black and white, no bleed. Photocopy for a class set without asking us.
If you want more
The same puzzles, 120 to a volume, in print.
The free sets are drawn from the same generator as our workbooks. Each volume runs 120 puzzles across six progressive difficulty groups, with the answer key sold as a separate companion.
Sold and shipped by Amazon. Crostem Press earns from qualifying purchases.