21. Thermodynamics [part 1 - temperature and heat] Flashcards
What is temperature
Temperature is a measure of the average kinetic energy of moving atoms and molecules.
What are the units of temperature?
- (*F)
- (*C)
- (K)
What is thermal energy
Thermal energy is the ________ of a substance due to its temperature. Temperature is a measure of the average kinetic energy of the atoms.
Basically thermal energy and kinetic energy are similar because?
temperature averages it all out.
On what fahrenheit (*F) does the water freezes?
32 *F
On what fahrenheit temperature does a thermometer indicates that a human has an average human body temperature?
98.6 *F
On what fahrenheit (*F) temperature does a water boils?
212 *F
What is the equation that you need in order to convert a celsius (*C) into a farenheit (*F)?
TF = 9/5Tc+32
On what degree Celsius (*C) does a water freezes and a water boils?
Water freezes in 0 *C and it boils 100 *C.
What is the equation that you need to use in order to convert Fahrenheit into a Celsius?
Tc=5/9(TF-32)
On what temperature does a water freezes and a water boils in kelvins?
A water freezes at 273.15 K (kelvins) and it boils at 373.15 K (kelvins).
What is absolute zero?
Absolute zero is the temperature at which everything stops, thus the kinetic energy of all molecules is zero. This temperature is measured in 0 K: which is crazy to think about and actually is impossible, so far humans have only made temperature as low as -273.144 degrees celsius or 0.006 K.
What is the Charles law?
Charles law talks about gasses as they have high amounts of KE and the atoms are free to go as far from each other as they please. “When the pressure on a sample of a gas is held constant, the volume and the temperature will be direct in proportion.”
Based on Charles law, a statement is portrayed:
“When the pressure on a sample of gas is held constant, the volume and the temperature will be in direct proportion.”
Explain this through a mathematical equation.
V2/V1 = T2/T1
What is thermal expansion?
Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to change in temperature, not including phase transition.
