Changes in matter

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Across
  1. 3. Displacement through how carbon dioxide is collected
  2. 5. supporter of combustion
  3. 6. the reaction where one part is exchanged
  4. 9. when a molecules breaks into 2 in one reaction
  5. 10. a raw material for iron extraction
Down
  1. 1. direction which air is displaced when hydrogen gas is collected
  2. 2. the smell of hydrogen gas
  3. 4. when two molecules join in one reaction
  4. 7. This furnace is used to extract iron
  5. 8. The ore from which iron is extracted