melting curves

1. Change of state: melting curvesChange of state: melting curves
A
Creative Chemistry
PowerPoint Presentation
By Nigel Saunders
Copyright © 2003 Nigel Saunders, all rights reserved
Permission is granted for personal and educational use only.
Commercial copying, hiring, lending is prohibited.

2. Change of stateChange of state
ice → water → steam

3. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Draw a graph of temperature …

4. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
… against the length of time it has been heated

5. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Timewarming
ice Really cold ice from the freezer

6. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
melting
ice
The temperature stays the same as the ice melts

7. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
0°C
Pure water melts at 0°C

8. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
0
warming
water
The temperature goes up as the water is warmed

9. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
0
boiling
water
The temperature stays the same while the water boils

10. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
0
100°C
Pure water boils at 100°C

11. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
0
100
Pure water melts at 0°C and boils at 100°C

12. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
0
100
heating
steam
Steam can give you a far worse burn than boiling water

13. Change of stateChange of state
ice → water → steam
Temperature
(°C)
Time
Pure water melts at ………°C and boils at ………°C