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Across 4. the volume of a liquid is constant due to _______ __ __________. (3 Words) 5. the lowest possible temperature that can exist (2 Words) 7. the SI unit for force 9. type of change that requires energy to be absorbed 12. the pressure caused by the collisions of a vapor and the walls of a container (2 Words) 14. the kinetic theory states that all particles of matter are in ______ _______. (2 Words) 15. changing from a gas to a liquid 16. 1000 Pa = 1 ______ 18. Charles's Law and Boyle's law can be combined into the _________. (3 Words) 20. the result of a force distributed over an area 22. changing from a liquid to a gas 24. the pressure in a closed container is caused by the ______ of gas particles with the walls of the container. 25. a type of vaporization that occurs at the surface of a liquid but below its boiling point 28. Charles's Law shows a relationship between the ______ and volume of a gas. (if the pressure and # of particles are held constant) 34. increasing the number of particles of a gas _______ the pressure. (if the temperature and volume are held constant) 35. type of change that requires energy to be released 37. state of matter with a definite volume and shape 38. state of matter with a definite volume but variable shape 39. mercury is in a _____ state at room temperature. 40. the faster a particle moves, the ______ its kinetic energy. 41. the temperature is ______ during a phase change. 42. state of matter with a variable volume and shape 43. the SI unit for pressure 44. state of matter that would exist at 10000 degrees Celsius

Down 1. gas particles move in a _____ line until they collide with something. 2. amount of energy needed to vaporize 1g of a substance (3 Words) 3. the energy an object has due to its motion (2 Words) 6. changing from a solid to a gas (skipping liquid) 8. a ______ is a reversible physical change that occurs when a substance changes from one state of matter to another. (2 Words) 10. a type of vaporization that occurs below the surface of a liquid at its boiling point 11. the forces of attraction are _____ in a liquid than a gas. 13. the amount of energy needed to melt 1g of a substance (3 Words) 17. changing from a solid to a liquid 19. the forces of attraction between gas particles are very ____. 21. the SI unit for area (2 Words) 23. as the temperature of a gas decreases, the pressure _____. (if volume and # of particles are held constant) 26. changing from a gas to a solid (skipping liquid) 27. nitrogen is in a _____ state at -215.0 degrees Celsius. 29. gases can fill a container of any shape or size due to their constant, very fast _____. 30. Boyle's Law shows a relationship between the ______ and volume of a gas. (if the temperature and # of particles are held constant) 31. water is in a _____ state at 102 degrees Celsius. 32. increasing the volume of gas ______ the pressure. (if the temperature and # of particles are held constant) 33. changing from a liquid to a solid 36. solids have a definite shape because they vibrate around ____ locations.