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