Across
- 2. a change that absorbs heat
- 4. the sum of a system's internal energy and the mathematical product of its pressure and volume (U + PV)
- 6. the energy an object has because of its motion
- 11. the transfer of theral energy between two bodies at different temperatures
- 12. kinetic energy associated with the random motion of atoms and molecules is ___ energy.
- 13. all matter, including components of the measurement apparatus, that serve to either provide heat to the system or absorb heat from it
- 14. standard enthalpy of ____ is an enthalpy change for a reaction in which exactly 1 mole of a pure substance is formed from free elements in their most stable states under standard state conditions
- 16. the total of all possible kinds of energy present in a substance
- 18. used to measure amounts of heat transferred to or from a substance
- 19. calorimeter used to measure the energy produced by reactions that yield large amounts of heat and gaseous products, such as combustion reaction
- 21. a commonly accepted set of conditions used as a reference point for the determination of properties under other different conditions
- 22. the value of a state ___ depends on the state that a system is in, and not on how that state is reached
- 24. a change that releases heat
- 25. the substance or substances undergoing the chemical or physical change
- 27. the amount of energy required to raise 1g of water by 1 degree Celsius
- 29. the Born-Haber ___ is an application of Hess's law that breaks down the formation of an ionic solid into a series of individual steps
- 30. law that states: if a process can be written as the sum of several stepwise processes, the enthalpy change of the total process equals the sum of the enthalpy changes of the various states
- 31. standard enthalpy of ____ is the enthalpy change when 1 mole of a substance burns under standard state conditions
- 32. the capacity to supply heat or do work
Down
- 1. the energy unit used to quantify the amount of energy derived from the metabolism of foods (Calorie)
- 3. work that occurs when a system pushes back the surroundings against restraining pressure, or when the surroundings compress the system
- 5. a quantitative measure of hot or cold
- 7. the amount of energy used when a force of 1 newton moves an object 1 meter
- 8. compounds containing only hydrogen and carbon
- 9. the heat ___ of a body of matter is the quantity of heat it absorbs or releases when it experiences a temp change of 1 degree C
- 10. a device used to measure the amount of heat involved in a chemical or physical process
- 15. the energy an object has because of its relative position, composition, or condition
- 17. the process of causing matter to move against an opposing force
- 20. enthalpy values, being that enthalpy is a state function, ___ be measured directly, only enthalpy changes
- 23. the science that deals with the relationships between heat, work, and other forms of energy in the context of (and) and physical processes
- 26. science concerned with the amount of heat absorbed or released during chemical and physical changes
- 28. the ___ energy of an ionic compound is the energy required to separate one mole of the solid into its component gaseous ion