Slide show: Modified from Kim Foglia

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

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

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

COHESION ___________ bonding __________ water molecules makes them stick together _______________ Water has a “skin” Tends to “bead up” Drinking straw HYDROGENBETWEEN Surface tension

ADHESION HYDROGEN bonding between water and ________molecules makes them stick to substances _____________________ Water climbs up paper towel ______________________ OTHER CAPILLARY ACTION MENISCUS

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

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

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

WATER HAS HIGH HEAT OF VAPORIZATION _______ required to change from liquid to gas ENERGY

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

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

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

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

pH scale measures amount of acidity or [H+] 1 X10 =[H+] pH =___ 1 X10 =[H+] pH =___ [H+] [OH-] = 10 If [H+] = 10, then [OH-] =