Across
- 1. gas release showing evidence of chemical change
- 5. coefficients ___ the equation
- 7. formed during a chemical reaction
- 9. evidence of chemical change found in eggs producing hydrogen sulfide gas
- 10. solid forming from liquids mixing together
- 12. 4Fe + ___O2 🡪 2Fe2O3
- 13. N2 + 3H2 🡪 ___NH3
- 14. number placed in front of a chemical formula
Down
- 2. indicates the number of atoms of that element
- 3. chemical ____: process that rearranges the atoms in one or more substances into one or more new substances
- 4. releasing or absorbing energy is often found as a ____ change
- 6. chemical evidence of wood turning to ash is a ___ change
- 8. product in this equation: 2H2 + O2 🡪 2H2O
- 11. enters into a chemical reaction