Surface Tension Intro

Water in a beaker is made up of molecules of water that are in constant motion (they never stop).

• true

• false

When water is dropped from a height, all of the molecules on its surface are attracted toward the center of the liquid causing the falling water to take on a .....

• rectangular shape

• triangular shape

• spherical/circular shape

• square shape

The IMA's between water molecules causes water to form a type of strong, elastic skin at it's surface. These intermolecular attractions result in....

• gravity

• surface tension

• water pressure

• magnetism

The intermolecular attractions between water molecules is caused by the fact that hydrogen and oxygen atoms don't share electrons (in their chemical bonds) evenly. The oxygen atoms hog the electrons giving the oxygen end of a water molecule a slight ________ charge, and the hydrogen end a slight _______ charge. The opposite charges of different molecules of water attract causing them to stick together.

• negative; positive

• positive ; negative

• positive; positive

• negative; negative

There are insects that can actually walk on water due to the IMA's between water molecules at the surface of a body of water.

• true

• false