Combustion

2. The transfer of energy by a force acting over a distance.
3. The law that states the total enthalpy change of a reaction is independent of the pathway.
5. The law of thermodynamics that states energy cannot be created or destroyed.
10. Everything outside the system in thermodynamics.
12. The ability to do work or cause change; released during combustion.
13. A reaction that releases heat.
14. The transfer of thermal energy from one object to another.
15. A device used to measure the amount of heat in a chemical reaction.
17. The gas that reacts with fuel during combustion.
18. The type of energy associated with motion.
19. A substance that is burned to release energy.

1. A chemical reaction between a fuel and oxygen that releases energy.
4. A process that occurs without outside intervention.
6. The type of energy stored due to position or composition.
7. A unit of energy in the International System of Units.
8. The total heat content of a system.
9. A measure of the disorder or randomness in a system.
10. The part of the universe being studied in thermodynamics.
11. The law of thermodynamics that states entropy of an isolated system always increases.
16. A reaction that absorbs heat.