1.1.3 - Kinetic Energy and Temperature Flashcards
1
Q
Why does temperature remain constant when a substance is changing state?
A
the energy added is being used to break the inter-particle forces rather than to raise the kinetic energy
2
Q
Why does the boiling point require more energy than the melting point?
A
because all the inter-particle forces must now be broken
3
Q
Which processes are endothermic?
A
melting, boiling, sublimation
4
Q
Which processes are exothermic?
A
freezing, condensation, deposition
5
Q
What temperature is absolute zero?
A
-273 degrees C
6
Q
Why is absolute zero important?
A
it is the lowest possible temperature at which all movement would stop
7
Q
How do you convert kelvin to celsius?
A
subtract 273.15
8
Q
How do you convert celsius to kelvin?
A
add 273.15
