Properties of Water COHESION ADHESION AND SURFACE TENSION

Properties of Water: COHESION, ADHESION, AND SURFACE TENSION

ITEM # 11 Nov. 8, 2018 �Fold your notebook page in half. Draw lines to divide page into 6 boxes for note.

Cohesion � The ability of water molecules to stick to other water molecules is known as cohesion. �Puddles of water on a flat surface �Cohesion is responsible for the tension on the surface of water that permits you to fill a glass with water beyond the top.

Adhesion � The ability of water molecules to stick to other types of molecules. �Water droplets on a car windshield

Surface Tension � The pull on the surface of liquids caused by the attraction of the molecules to one another. (cohesion) � Surface Tension makes it seem that there is a thin, elastic cover on the liquid. � It allows insects to walk on water.

Buoyancy � The upward force on an object in a liquid or gas. �Buoyancy allows boats to float and makes a rock feel lighter in water than in air. �Buoyancy- if an object pushes away more water weight than its own weight then the object will float.

density Amount of matter present in a given volume D=m/v Styrofoam metal

Capillary action �Rise of a liquid through a tiny opening or tube �Capillary action gives plants the ability to absorb water from the ground. (Xylem)

Specific Heat � Specific heat is another physical property of matter. � The temperature of matter is a direct measure of the motion of the molecules: The greater the motion the higher the temperature: � The energy required to raise the temperature of one gram of any substance 1 degree Celsius.

Amoeba Sisters: Properties of Water TOTD � What makes water so unique? � What does it mean water is polar? � How does water get up the tree from the roots? � Why can insects walk on water? � Why don’t fish die when pond freezes in winter? � How is high specific heat for water important?