Across
- 2. a system that allows a reaction to escape
- 4. a solid formed when two liquid solutions are mixed
- 5. Another name for chemical reaction
- 12. the process of substances changing into another substance
- 13. a process that releases energy, hot
- 14. saved
- 15. the desired features of a design
- 16. an early design of product
- 17. a system that does not let a reaction escape
Down
- 1. to retrieve waste material for it to be reused
- 3. a substance before a reaction happens
- 5. something that limits the solution of a problem
- 6. the principle that mass is not created or destroyed during a chemical reaction
- 7. a process that absorbs energy, cold
- 8. the energy in the particles of a substance
- 9. solid, liquid, or gas
- 10. to mix into another substance
- 11. the final substance at the end of a reaction
