Cohesion, adhesion and surface tension

Which of the following describes surface tension in water?

• Surface tensions occur due to ionic bonding

• Surface tension is caused by water molecules repelling one another

• Surface tension allows water to support small objects if they are placed carefully on its surface

• Surface tension of water is weakened by hydrogen bonding

Allen pours water into a graduated cylinder. He notices that the surface of the water is curved upwards against the glass.

Which of the following identifies this phenomenon and explains how it is formed?

• The curved surface is a convex meniscus which has formed because of capillary action

• The cuved surface is a concave meniscus which has formed because of capillary action

• The curved surface is a convex meniscus which has formed because of surface tension

• The curved surface is a conave meniscus which has formed because of surface tension

Which of the following scenarios is an example of cohesion?

• Water molecules stick to one another and form a bead

• Water sticks to the walls of blood vessels

• Water molecules stay on the tip of a pine needle because the water is attracted to the surface of the needle

• Water molecules stick to the surface of a mirror

Water striders are insects that have the ability to walk across the surface of water. Which properties of water allow the strider to do this?

• Adhesion

• Capillary action

• Specific heat

• Surface tension

What is the primary force responsible for capillary action in plants?

• Gravitational force

• Cohesive force

• Adhesive force

• Magnetic force

Which of the following best explains why water rises in a thin tube?

• Water molecules are attracted to the tube's surface

• Water molecules are repelled by the tube's surface

• Water molecules are heavier than air

• Water molecules are lighter than air

What term describes the attraction between molecules of different substances?

• Cohesion

• Adhesion

• Surface tension

• Capillary action

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

• Cohesion

• Adhesion

• Surface Tension

• Precipitation