Across
- 2. big number
- 3. ice pack
- 7. compound
- 13. scientific support
- 14. new substance made
- 15. hydrogen
- 16. group of atoms
- 17. mass can't be destroyed
Down
- 1. reaction arrow
- 4. energy heat pack
- 5. bending paper
- 6. protons
- 8. solid chunks formed in liquid
- 9. formed after reaction
- 10. reactants are converted to one or more different substances
- 11. mathematical formula in science
- 12. small number