Across
- 4. The speed at which a reaction occurs
- 5. The starting materials for a chemical reaction
- 6. External energy added to help the reaction occur
- 7. When one element replaces a second element in a compound
- 10. Produces energy in the form of heat and light
Down
- 1. A single compound that breaks down into two or more simpler products
- 2. A chemical change involving the exchange of positive ions between two compounds
- 3. A substance that speeds up the reaction
- 8. Substances formed by the chemical reaction
- 9. Two or more substances react to form a single new substance