Across
- 4. the branch of chemistry concerned with the quantities of heat evolved or absorbed during chemical reactions.
- 5. the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
- 9. used to measure amounts of heat transferred to or from a substance
- 10. (of a reaction or process) accompanied by the release of heat.
- 12. the energy stored in the chemical bonds of a substance.
- 14. the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.
- 16. The joule is the unit of energy in the International System of Units.
- 17. the strength and vitality required for sustained physical or mental activity.
- 18. an apparatus for measuring the amount of heat involved in a chemical reaction or other process.
- 19. unit of energy equivalent to the heat energy needed to raise the temperature of 1 gram of water by 1 °C (now often defined as equal to 4.1868 joules).
- 20. enthalpy change when 1 mole of a substance burns (combines vigorously with oxygen) under standard state conditions
Down
- 1. that energy can neither be created nor destroyed - only converted from one form of energy to another.
- 2. the heat absorbed by one mole of that substance as it is converted from a solid to a liquid
- 3. the change in the enthalpy of a chemical reaction that occurs at a constant pressure
- 6. energy which a body possesses by virtue of being in motion.
- 7. the heat absorbed by one mole of that substance
- 8. the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
- 11. (of a reaction or process) accompanied by or requiring the absorption of heat.
- 13. the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).
- 15. the change in enthalpy associated with a particular chemical process.