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# 2 changes in state

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### 2 changes in state

1. 1. Changes in State
2. 2. Changes in State <ul><li>3 Ways State of Matter Changes </li></ul><ul><li>-Evaporation </li></ul><ul><li>-Sublimation </li></ul><ul><li>-Condensation </li></ul>
3. 3. Evaporation <ul><li>When liquid changes to a gas when the temperature is above the boiling point </li></ul><ul><li>100 °C, 212°F or 373 K </li></ul>
4. 4. Evaporation Pictures
5. 5. Sublimation <ul><li>When a solid changes directly to a gas without going through the liquid state. </li></ul>
6. 6. Sublimation Pictures
7. 7. Condensation <ul><li>When a gas changes to a liquid when cooled to or below the boiling point. </li></ul>
8. 8. Condensation Pictures
9. 9. Heat/Energy <ul><li>Joules- measurement of energy (like calories). </li></ul><ul><li>4.184 calories= 1 Joule </li></ul><ul><li>1000 Joules= 1 kJ (kiloJoule) </li></ul>
10. 10. Heat of Fusion <ul><li>Amount of energy needed to change from a solid to a liquid. The heat of fusion for water is 334 kJ/kg. </li></ul>
11. 11. Heat of fusion
12. 12. Heat of Vaporization <ul><li>Amount of energy needed to change from liquid to a gas. The heat of vaporization of water is 2260 kJ/kg. </li></ul>
13. 13. Which requires less energy? <ul><li>Water going from a solid to a liquid. </li></ul><ul><li>OR </li></ul><ul><li>Water going from a liquid to a gas. </li></ul>