MATTER, PHYSICAL & CHEMICAL - WORD FIND Science Game Puzzle Worksheet - featuring word search of different matter, physical and chemical vocabulary words. To word find the 50 hidden words, puzzlers must look in all directions, including backward and diagonally. A good resource for early finishers or as a take-home game when teaching a unit on matter, physical and chemical. The vocabulary words that are covered are: Air, Atom, Boiling, Bronze, Buoyant, Burning, Chemical, Coal, Colloid, Compositio