Across
- 4. the energy an object has because of its motion
- 5. the temperature at which a liquid changes into a solid
- 8. is a transparent fusion product of inorganic substances that have cooled to a rigid state without crystallizing
- 10. si unit of pressure
- 11. lacks an ordered internal structure
- 14. the pressure required to support 760mm of mercury in a mercury barometer at 25 degree C
- 15. the smallest group of particles within a crystal that retains the geometric shape of the crystal
- 16. conversion of a liquid to a gas or vapor
- 18. defined as the boiling point of a liquid at a pressure of 101.3kPa
- 19. a device that is used to measure atmospheric pressure
- 20. all matter consists of tiny particles that are in a constant motion
Down
- 1. the collisions of atoms and molecules in air with objects
- 2. the temperature at which the vapor pressure of the liquid is just equal to the external pressure on the liquid
- 3. the particles are arranged in an orderly, repeating, three-dimensional pattern called a crystal lattice
- 6. results from force exerted by a gas per unit surface area of an object
- 7. this conversion occurs at the surface of a liquid that is not boiling
- 9. measure of the force exerted by a gas above liquid
- 12. the temperature at which a solid changes into a liquid
- 13. an empty space with no particles and no pressure
- 17. are two or more different molecular forms of the same element in the same physical state