1. Water’s Physical Properties Marine Studies

2.  What is Cohesion?  Individual water molecules stick together  Cohesion creates a high surface tension  Hydrogen bonds allow cohesion  Water has cohesion  Alcohol does not have cohesion Cohesion

3.  Adhesion is when water sticks to other surfaces  Water sticks to the glass plate  Alcohol does not stick Adhesion

4.  Diffusion is the process by which a substance moves from an area of high concentration to low concentration until its at equilibrium.  Warm water diffuses substances faster than cold water Diffusion

5.  Density is Mass divided by Volume  Mass/Volume  Ice is less dense than water  Ice is more dense than alcohol  Alcohol < Ice < water  Oil < Water Density

6.  Polar molecules have a slight charge at one end  Oil and Water don’t mix, because Water is Polar and oil is not Polarity

7.  Light refraction is the bending of light waves.  Water refracts light and makes objects look bent, closer or bigger  Water also bends sunlight as it enters the ocean.  Certain wavelengths can penetrate deeper than others.  Blue wavelength penetrate furthest Light Refraction