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