Across
- 3. The force that causes objects to float. The principle of Archimedes suggets that when a solid is placed in a fluid (a liquid or a gas), it is subject to an upward force equal in magnitude to the weight of the fluid it has displaced.
- 4. With atoms, what's really going on is that the space outside the nucleus is filled with the quantum fields that represent an electron.
- 8. his law states the pressure of a fixed quantity of gas held a constant temperature is inversely proportional to the volume of the gas
- 9. a hypothetical gas whose molecules occupy negligible space and have no interactions, and that consequently obeys the gas laws exactly.
- 10. the lowest possible temperature where nothing could be colder and no heat energy remains in a substance
- 13. Gases are composed of a large number of particles that behave like hard, spherical objects in a state of constant, random motion. These particles move in a straight line until they collide with another particle or the walls of the container.
- 15. boyle’s law suggests that the pressure of a fixed quantity held at a constant temperature is _______ proportional to the volume of the gas
- 16. the process of a substance spreading out to evenly fill its container or environment
- 18. the force that a gas exerts per unit surface area and in SI units is expressed as N/m^2. Other units of pressure measurements are in terms of atmospheres Pascals and lbs/in^2.
- 19. Pressure is measured in ____, is equal to 1 N/m^2.
- 20. a measure of the average kinetic energy of the particles in a body and is measured in units of absolute temperature
Down
- 1. a device that measures atmospheric pressure,changes in the atmospheric pressure can be recorded.
- 2. Vacuum is a volume that encloses little or no matter.
- 5. the pressure that would be exerted by one of the gases in a mixture if it occupied the same volume on its own.
- 6. symbol Vm, is the volume occupied by one mole of a substance (chemical element or chemical compound) at a given temperature and pressure. It is equal to the molar mass (M) divided by the mass density (ρ).
- 7. fixed quantity of gas can be accurately described in terms of the number of moles, volume, temperature, and pressure
- 11. law states the volume of fixed amount of gas, held at constant pressure is directly proportional to its absolute temperature.
- 12. the volume of a fixed amount of gas is inversely proportional to its pressure and directly proportional to its absolute temperature. The same quantity V being proportional to two other quantities.
- 14. the measure of how much a given volume of matter decreases when placed under pressure
- 17. the gases surrounding a star or planetary body held in place by gravity, equal to 101,325 pascals.