Air and Oxygen
Find the words in the grid. Words can go horizontally, vertically and diagonally in all eight directions.
| N | C | R | N | K | F | T | V | K | K | Z | E | N | F |
| R | O | V | C | L | C | G | G | L | L | R | K | H | H |
| M | M | P | R | O | C | E | J | B | U | F | T | H | C |
| R | B | E | N | H | M | J | D | T | J | F | C | A | M |
| U | U | R | I | K | G | P | X | I | I | B | T | L | R |
| O | S | O | T | Y | H | I | O | F | X | A | T | B | K |
| P | T | X | R | Y | M | Y | R | S | L | O | K | H | L |
| A | I | I | O | P | B | L | D | Y | I | F | I | O | Y |
| V | O | D | G | R | R | R | S | R | N | T | X | D | Q |
| R | N | E | E | W | Y | T | J | I | O | Y | I | J | B |
| E | G | T | N | W | X | R | L | A | G | G | K | O | T |
| T | K | N | O | B | R | A | C | E | J | F | E | F | N |
| A | E | S | E | N | A | G | N | A | M | N | N | N | W |
| W | G | A | S | E | S | B | U | R | N | E | D | V | M |
air gases
burned hydrogen
carbon manganese
catalyst mixture
combustion nitrogen
composition oxygen
dioxide peroxide
fifth water vapour