Across
- 3. the rusting of iron is a ________reaction
- 4. reactions in which one element takes place of another element in a compound
- 6. a kind of reaction that releases energy in the form of heat
- 7. when no. of atoms of each element are same on both the sides.
- 8. a substance which increases the rate of reaction without changing itself
Down
- 1. a new substance i.e. formed or produced after a chemical reaction
- 2. the addition of oxygen and the removal of hydrogen to a substance
- 5. C+O2 gives CO2 is an example of which reaction