Changes in state Flashcards
1
Q
What is freezing and what happens to the internal energy?
A
A liquid turns to a solid - internal energy decreases
2
Q
What is melting and what happens to the internal energy?
A
Solid turns to a liquid - internal energy increases
3
Q
What is boiling / evaporating and what happens to the internal energy?
A
Liquid turns to a gas, internal energy increases
4
Q
What is condensation and what happens to the internal energy?
A
Gas turns to a liquid - internal energy decreases.
5
Q
What is conservation of mass?
A
When substances change state - mass is conserved
6
Q
Define physical change
A
No new substance is made, process can be reversed
7
Q
What is sublimation and what happens to the internal energy?
A
Solid turns directly into a gas - internal energy increases
8
Q
A
