P6.3 Changes of state Flashcards
1
Q
What is the melting point?
A
The temperature at which a solid changes to a liquid
2
Q
What is the boiling point?
A
The temperature at which a liquid changes to a solid is called its freezing point
3
Q
Why is salt used for gritting roads?
A
Reduce melting point of water - so they don’t get icy until they are really cold
4
Q
What is latent heat?
A
The energy transferred to a substance when it changes its state is called latent heat
5
Q
What does flat section of a temperature-time graph show?
A
Shows the melting point or the boiling of a substance
