Properties of Water

Chapter 2-2

Questions of the day

1. What is the difference between cohesion and adhesion?

2. What are some “real-life” examples of adhesion and cohesion being used?

Adhesion Vs Cohesion

• Adhesion: the attraction between molecules of a different substance

• Cohesion: the attraction between molecules of the same substance

Capillary Action

• is a phenomenon where liquid spontaneously rises in a narrow space such as a thin tube, or in porous materials • Why do you thing this

happens?

Surface Tension

• is a property of the surface of a liquid that allows it to resist an external force • How does

cohesion/adhesion fir in with surface tension?

pH Scale

Buffers

• A weak acid or base that is used to change the pH of a solution in small increments

• Question:• Solution has a pH of 12 and

we need the pH to be 10. What type of buffer would you use?

Water Properties Video

Video of Surface Tension, Adhesion, and Cohesion

Questions of the day

1. What is the difference between cohesion and adhesion?

2. What are some “real-life” examples of adhesion and cohesion being used?