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Absolute Zero
cava 303 s2d10 1.11 Absolute Zero
| Question | Answer |
|---|---|
| [M-] of gas molecules account for the properties of gases. | Motions of gas molecules account for the properties of gases. |
| Pressure: the combined forces of the [...] between gas particles and the walls of the container | Pressure: the combined forces of the collisions between gas particles and the walls of the container |
| Temperature: the measure of molecular [...] | Temperature: the measure of molecular motion (average kinetic energy) |
| Volume: the moving gas molecules occupy [...] | Volume: the moving gas molecules occupy space |
| Movement energy is called [...] Energy | Movement energy is called Kinetic Energy |
| When you heat particles, they move [-er], thus they have more kinetic energy | When you heat particles, they move faster, thus they have more kinetic energy |
| Temperature is a measure of the average [...] energy of the molecules in a system. | Temperature is a measure of the average kinetic energy of the molecules in a system. |
| Lord [...] introduced absolute zero. | Lord Kelvin introduced absolute zero. |
| Kelvin reasoned that there must be a temperature at which average kinetic energy is [...] and all motion stops. He called this temperature absolute zero. | Kelvin reasoned that there must be a temperature at which average kinetic energy is zero and all motion stops. He called this temperature absolute zero. |
| Nothing can be colder than absolute zero because temperature is a measure of motion, and all motion (atomic, molecular) [...] at absolute zero. | Nothing can be colder than absolute zero because temperature is a measure of motion, and all motion (atomic, molecular) ceases at absolute zero. |
| Gas law problems must use the [...] (absolute) temperature scale. | Gas law problems must use the Kelvin (absolute) temperature scale. |
| There are no [n-] measurements possible in Kelvin. | There are no negative measurements possible in Kelvin. |
| Kelvin is always a [-er] number than the equivalent Celsius. | Kelvin is always a bigger number than the equivalent Celsius. |
| The Kelvin and Celsius scales are exactly the same, except for that fact that [...] is in the right place on the Kelvin scale. | The Kelvin and Celsius scales are exactly the same, except for that fact that zero is in the right place on the Kelvin scale. |
| K = °C [...] 273 | K = °C + 273 |
| °C = K [...] 273 | °C = K – 273 |