Across
- 5. A change observed during a chemical reaction.
- 8. The simplest description of what is happening in a reaction.
- 9. Occurs when something reacts with oxygen gas.
- 10. The types of bonds which are broken during a reaction.
- 11. A type of combustion with insufficient oxygen.
Down
- 1. An example of a combustion reaction which occurs within cells.
- 2. Produced by some incomplete combustion reactions.
- 3. One of the products from a combustion reaction.
- 4. The substance(s) you start with before a chemical reaction.
- 6. A reaction where the energy of the reactants is greater than the energy of the products.
- 7. A reaction that absorbs heat from the surroundings.