Water Rotating Lab Review Radjewski

Station 1 Station 1 Phase change

Hydrogen bonding! Tighter Arrangement Of molecules Loose Arrangement

Station 2 Surface tension

Station 1 Station 3 Adhesion

Station 4 Density Station 1 Ice floats in the water because it is less dense. Ice is more dense than ethanol so it sinks to the bottom! Density

Station 1 Station 5 Solvent

Station 1 Station 6 Cohesion

Capillary Action Station 7

Lab Water Chart Water Property Definition Explain Example in life Polarity Unequal charge distribution Electronegativity, unequal sharing, tetrahedron, partial charges Salt dissolves in water Hydrogen Bonding Weak intermolecular electrostatic attraction Attraction between partial charges puddles Cohesion Attraction of water molecules for each other Hydrogen bonding Transpiration, surface tension, Jesus Christ Lizard, water striders

Analysis Chart continued Water Property Definition Explain Example in life Surface tension Resistance to being stretched; ability to form sheath on surface Hydrogen bonding Water striders; Jesus Christ Lizard, paperclips on water Adhesion Attraction of water molecules for other molecules Capillarity; transpiration High specific heat The heat required to raise the temperature 1 degree Water changes temp. slowly; high boiling point Boiling water; freezing water

Analysis Chart continued Water Property Definition Explain Example in life High heat of vaporization the amount of energy that is needed to turn a substance from the liquid state to the gaseous state Breaking of H-bonds, good coolant; high boiling point Sweating cools down organisms; transpiration Good solvent Dissolves many compounds Dissolves by ionization Koolaid, salt water Phase Change Solid to liquid to gas Ice floats (less dense); change in crystal lattice Ice layer on ponds; snow;