Final answer:
Liquids exert adhesive and cohesive forces on solids. Adhesive forces are attractive forces between molecules of different types, while cohesive forces are attractive forces between molecules of the same type. Surface tension is a general effect caused by cohesive forces.
Step-by-step explanation:
Liquids exert different types of forces on solids, one of which is called adhesive forces. Adhesive forces are attractive forces between molecules of different types. These forces cause liquid drops to cling to surfaces such as window panes.
Another type of force that liquids exert on solids is cohesive forces. Cohesive forces are attractive forces between molecules of the same type. They hold the molecules together and allow liquids to be held in open containers.
Surface tension is a general effect caused by cohesive forces in liquids, which causes the surface of a liquid to contract to the smallest possible area. This effect is related to the strength of the cohesive force and varies with the type of liquid.