Across
- 2. having been thought about carefully
- 3. happens suddenly, unexpectedly, or prematurely.
- 5. retrieve or recover
- 10. in a chemical reaction mass is neither created nor destroyed
- 11. a limitation or restriction.
- 13. a thing or person that is the result of an action or process
- 14. internal energy present in a system in a state of thermodynamic equilibrium by virtue of its temperature.
- 15. reaction or process accompanied by the release of heat.
- 16. when one chemical substance is transformed into one or more different substances
Down
- 1. a process that involves rearrangement of the molecular or ionic structure of a substance
- 2. a principle or standard by which something may be judged or decided.
- 4. a system that has flows of information, energy, and/or matter between the system and its environment, and which adapts to the exchange
- 6. reaction or process accompanied by or requiring the absorption of heat
- 7. a region that is isolated from its surroundings by a boundary that admits no transfer of matter or energy across it.
- 8. a substance that takes part in and undergoes change during a reaction.
- 9. become or cause to become incorporated into a liquid so as to form a solution.
- 12. a first, typical, or preliminary model of something, especially a machine, from which other forms are developed or copied.