cohesion adhesion and surface tension

What term describes a measure of how difficult it is to break the surface of a liquid?

• Surface Tension

• Viscosity

• Density

• Buoyancy

TRUE or FALSE? The surface tension of all liquids is exactly the same (i.e. water has the same surface tension as oil).

• TRUE

• FALSE

What term describes the attraction between molecules of different substances?

• Cohesion

• Adhesion

• Surface tension

• Capillary action

Explain how cohesion and adhesion are present when washing a car.

• Cohesion helps water stick to the car, and adhesion helps soap stick to dirt.

• Cohesion helps soap stick to dirt, and adhesion helps water stick to the car.

• Cohesion helps water stick to the car, and adhesion helps water stick to the sponge.

• Cohesion helps soap stick to the sponge, and adhesion helps water stick to dirt.

Explain how it is possible to float a needle on the surface of water even though it is more dense than water.

• Due to adhesion

• Due to surface tension

• Due to capillary action

• Due to buoyancy

Explain how surface tension makes it possible for small insects, such as water striders, to walk on water.

• Surface tension creates a solid surface

• Surface tension reduces the weight of the insect

• Surface tension allows the insect to float

• Surface tension creates a film on the water surface

Identify an example of surface tension that you observe on a daily basis.

• Water forming droplets on a leaf

• Water boiling

• Water freezing

• Water evaporating

Water spreading and soaking in "wetting" a surface is an example of which phenomenon?

• Cohesion

• Adhesion

• Surface Tension

• Sublimation

Water being absorbed by a paper towel is an example of which phenomenon?

• Cohesion

• Adhesion

• Surface Tension

• Precipitation

Cohesion, Adhesion, or Surface Tension? An insect walking on water.

• Cohesion

• Adhesion

• Surface Tension

• Capillary Action