Unit 7 vocab

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Across
  1. 2. When anything solid turns into a gas without first becoming liquid
  2. 5. the amount of energy stored in a bond between atoms in a molecule
  3. 6. the process of measuring the amount of heat released or absorbed during a chemical reaction
  4. 7. the formula that an algorithm feeds data to in order to calculate predictions
  5. 8. the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius
  6. 9. the heat which can increase one unit temperature of a mass unit of a substance
  7. 11. the quality of being hot; high temperature.
  8. 13. the amount of heat needed to turn 1g of a liquid into a vapor, without a rise in the temperature of the liquid
  9. 15. the change in enthalpy when one mole of a substance in the standard state
  10. 16. the act or process of melting or making fluid by heat
  11. 17. The condition under which two substances in physical contact with each other exchange no heat energy
  12. 19. a very simplified representation of the valence shell electrons in a molecule
  13. 21. the sum of the internal energy and the product of the pressure and volume of a thermodynamic system
  14. 23. the difference between the reaction system energy before and after a reaction
  15. 25. everything that is not directly involved in the reaction.
  16. 26. the values which depend on the state of the substance
  17. 27. chemical reactions in which the reactants absorb heat energy from the surroundings to form products
  18. 28. thermal energy transferred between two systems at different temperatures that come in contact
  19. 29. a collection of objects (or smaller systems) that can be identified
  20. 30. The average of kinetic energy of all the molecules present that matter
Down
  1. 1. the process where water vapor becomes liquid
  2. 3. an equation that takes two or more steps to solve
  3. 4. the quantity of heat necessary to change 1 g of a solid to a liquid with no temperature change
  4. 10. used to measure the amount of thermal energy transferred in a chemical or physical process
  5. 12. the release of heat
  6. 14. chemical reactions in which the reactants absorb heat energy from the surroundings to form products
  7. 18. Heating curves show how the temperature changes as a substance is heated up. Cooling curves are the opposite. They show how the temperature changes as a substance is cooled down
  8. 20. the process in which a gas changes directly to a solid without going through the liquid state
  9. 22. the branch of chemistry concerned with the quantities of heat evolved or absorbed during chemical reactions
  10. 24. n a chemical reaction, the change of enthalpy (i.e. the heat of reaction under constant pressure) is independent of the direction between the original and final states