CHAPTER 3 ENERGY IN TRANSIT

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Across
  1. 2. It involves an exothermic reaction, meaning it releases a large amount of heat.
  2. 5. A form of energy transfer between two objects as a result of their difference in temperature.
  3. 7. It is an extensive property; And the amount of heat absorbed or eleased by a chemical reaction at constant atmospheric pressure
  4. 9. An insulator apparatus that contains water or any other liquid with a known heat capacity.
  5. 10. The change in enthalpy when the compound is formed from its elements under standard conditions (1 atm, 25 degrees C)
  6. 11. This can thus be calculated by subtracting the sum of the enthalpies of formation of the products and the sum of the enthalpies of formation of the reactants.
  7. 14. What is the study of the energy or heat flow that occurs during a chemical reaction and/or physical transformation.
  8. 16. It may emit heat into the surroundings, for which the q is _______.
  9. 17. The part of the universe being studied or to which attention is focused.
  10. 18. This system is capable of absorbing heat, and its q is ________.
  11. 21. reaction The enthalpy difference between the products and reactants is known as the _________________.
  12. 23. This is sometimes used to ensure that the contents of a cup are mixed uniformly.
  13. 26. The father of thermodynamics. He was a French physicist and engineer who was highly interested in improving the efficiency of steam engines, where a large amount of heat is lost due to friction and conduction.
  14. 27. The flow of energy (as heat) between the system and its surroundings is measured through ___________.
  15. 28. Has a specific heat of 2.11 J/g·°
Down
  1. 1. Has a specific heat of 4.18 J/g·°C
  2. 3. A chemical equation that shows the value and direction of heat involved in a reaction.
  3. 4. In 1892, James Dewar invented a vacuum flask known as the thermos.
  4. 6. That processes with negative values of q are described as __________.
  5. 8. Is symbolized by q.
  6. 12. This is inserted into the cork cover to measure temperature changes.
  7. 13. The enthalpy of formation for an element in its standard state is ____.
  8. 15. Energy cannot be created or destroyed, only transformed.
  9. 19. When the system absorbs heat from its surroundings, q is positive, and the corresponding process is __________.
  10. 20. Has a specific heat of 2.08 J/g·°C
  11. 22. This includes everything else in the universe.
  12. 24. Is the amount of energy needed to increase the temperature of a substance or material by 1°C.
  13. 25. This is to minimize heat loss.