Across
- 4. Process in which one or more substances are changed into new substances
- 5. Chemical reaction in which two or more substances combine
- 6. Reaction in which heat is evolved
- 7. Substance that speeds up a chemical reaction without being consumed
- 9. Substance that undergoes a chemical change
Down
- 1. Reaction in which heat is absorbed
- 2. Chemical equation in which the number of atoms of each element is equal on both sides
- 3. Type of chemical reaction in which a single compound breaks down
- 8. Representation of a chemical reaction using symbols and formulas
- 10. Number that represents the number of atoms of an element in a molecule