1. Slide show: Modified from Kim Foglia http://www.explorebiology.com http://www.explorebiology.com

3. Water is a ____________________ molecule ___________ pattern of electric charge ______ & ________ poles POLAR COVALENT UNEVEN + -

4. Water molecules form _____________bonds with each other + from one molecule attracted to – of neighbor Makes molecules “__________” HYDROGEN STICKY

5. HYDROGEN BONDING PRODUCES _____________PROPERTIES OF WATER ___________ ______________ ___________________________ ________________________________ ___________________ EMERGENT COHESION ADHESION “UNIVERSAL” SOLVENT HIGH HEAT OF VAPORIZATION ICE FLOATS

6. COHESION ___________ bonding __________ water molecules makes them stick together _______________ Water has a “skin” Tends to “bead up” Drinking straw HYDROGENBETWEEN Surface tension http://online-english-lessons.eu/wordpress/2011/06/idiom-water-off-a-ducks-back/

7. ADHESION HYDROGEN bonding between water and ________molecules makes them stick to substances _____________________ Water climbs up paper towel ______________________ OTHER CAPILLARY ACTION MENISCUS http://morrisonlabs.com/meniscus.htm http://papertowelworld.com/images/bounty.gif

8. PLAY MOVIE HERE

10. HYDROPHILIC _______________ __________ molecules are attracted to water ____________ _____________________ WATER “loving” POLAR ionic “Like dissolves like”

11. HYDROPHOBIC _______________ ____________ molecules move away from water ____________ _____________________________ WATER “fearing” NON POLAR Non-ionic “Oil and water don’t mix”

12. HIGH SPECIFIC HEAT Resists ___________ in temperature takes a lot to heat it up takes a lot to cool it down _______________ temperatures on Earth CHANGES MODERATES http://en.wikipedia.org/wiki/File:Globe.png

14. WATER HAS HIGH HEAT OF VAPORIZATION _______ required to change from liquid to gas ENERGY http://www.school-for-champions.com/science/evaporation.htm

16. ICE FLOATS ! Most (ALL?)substances are _______dense as solids than liquids.... NOT WATER! __________ bonds form a crystal with loose structure so SOLID ICE is ______________ than LIQUID WATER. MORE HYDROGEN LESS DENSE http://amitjathar007.blogspot.com/2011/06/why-does-ice-float.html

17. http://www.destination360.com/north-america/us/michigan/michigan-ice-fishing

18. WATER FORMS IONS If concentration of two ions is ______, water is ____________ If [H+] > [OH-], water is ________ If [H+] < [OH-], water is ________. EQUAL NEUTRAL ACIDIC BASIC

20. Log scale like Richter for measuring earthquakes Solution A is _____ times _________ acidic than solution B more 1000 A pH = 2 B pH = 5

21. Log scale like Richter for measuring earthquakes Solution B is _____ times _________ acidic than solution A more 100 A pH = 9 B pH = 7

22. pH scale measures amount of acidity or [H+] 1 X10 =[H+] pH =___ 1 X10 =[H+] pH =___ [H+] [OH-] = 10 If [H+] = 10, then [OH-] = 10 7 4 -7 -4 -14 -8 -6