12/9 quiz OR questions Flashcards
1
Q
how does absolute 0 apply to motion of particles
A
absolute zero (0K)
- temperatures can’t be below 0 Kelvin
- Kelvin measures kinetic energy
- 0 Kelvin means 0 kinetic energy
- @ 0 Kelvin there is no motion
2
Q
what would happen if water reached 100 degrees Celsius and stayed constant
A
Vaporization will not occur so it will stay water because there is not enough energy to complete the change
3
Q
how is it possible to boil warm water in a syringe without adding heat
A
According to a phase diagram, without changing temperature, the only way to see a phrase change is to decrease pressure. When I pulled on the syringe stopper it boiled because I decreased the pressure
4
Q
why does steam cause worse burns than water?
A
because steam has more energy; per gram of steam @100 degrees celsius, there are 2260 more Joules of energy than water @ 100 degrees, so the steam burns worse.
