Across
- 2. - representation of a chemical reaction using chemical symbols, subscripts, and coefficients
- 4. - produced by a chemical reaction
- 7. - exchanges occur across system boundaries
- 8. - number written slightly below and to the right of a chemical symbol
- 9. - according to the law _____ cannot be created or destroyed
Down
- 1. - number in front of a chemical formula
- 3. - exchanges do not occur across boundaries
- 5. - enters into a chemical reaction
- 6. - to produce