Air Pressure and Surface Tension

Surface tension is the property of water in which...

• water molecules at the surface tend to stick together.

• water spills easily.

• water tends to be see-through.

Describe COHESION.

• Water molecules attracted to other substances.

• Water molecules climbing upwards against the force of gravity.

• Water molecules dissolving many substances because of its polarity.

• Water molecules attracted to other water molecules.

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Water beads up on the surface of a penny because of this property.

• Adhesion
• High Surface Tension
• Universal Solvent
• Changes in Density

Water droplets take a spherical shape (as pictured) because of ____________

• adhesion
• cohesion
• capillary action
• solubility

Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?

• adhesion
• surface tension
• solvent properties
• nonpolar

Because of surface tension, you can put things into a full glass of water and...

• the water will immediately spill.

• the water won't spill for quite a while.

• the water will never spill.

• when the water spills, whatever you put in will also spill.

Rain drops are spherical in shape because of

• low temperature
• Surface Tension
• Viscosity
• External forces

Force of attraction between similar molecules is called 

• Cohesive force
• Adhesive force
• Magnetic force
• gravitational force

surface tension of water can be reduced by

• heating

• Adding soap solution

• cooling

• adding salt