Water
Why is water a polar molecule?
oxygen is more electronegative than hydrogen so attracts shared electron pair
what are cohesion and adhesion?
cohesion = water molecules sticking to themselves
adhesion = water molecules sticking to other polar molecules
What makes water cohesive?
hydrogen bonds between adjacent molecules
example of the effects of surface tension
water striders walking on water’s surface
physical properties of water
buoyancy
viscosity
thermal conductivity
specific heat capacity
what is capillary action?
water being pulled up through narrow spaces because of cohesion and
adhesion
origins of water on Earth
delivered by collisions with water-rich asteroids, maintained because of
gravity and distance from the sun (goldilocks zone)
Water 1
Why is water a polar molecule?
oxygen is more electronegative than hydrogen so attracts shared electron pair
what are cohesion and adhesion?
cohesion = water molecules sticking to themselves
adhesion = water molecules sticking to other polar molecules
What makes water cohesive?
hydrogen bonds between adjacent molecules
example of the effects of surface tension
water striders walking on water’s surface
physical properties of water
buoyancy
viscosity
thermal conductivity
specific heat capacity
what is capillary action?
water being pulled up through narrow spaces because of cohesion and
adhesion
origins of water on Earth
delivered by collisions with water-rich asteroids, maintained because of
gravity and distance from the sun (goldilocks zone)
Water 1
