Exploring Cohesion and Adhesion in Water

The video explores the properties of water, focusing on cohesion and adhesion. It demonstrates six activities to illustrate these properties, including experiments with paper clips, pennies, and colored water. The video explains how cohesion and adhesion work at a molecular level, highlighting concepts like surface tension and capillary action. Viewers are encouraged to try these activities and understand the science behind them.

What happens to the lid when the jar is flipped over without water?

• It breaks.

• It floats.

• It falls off.

• It stays in place.

Why does the water stay in the jar when the lid is removed after adding water?

• Because of gravity.

• Because of air pressure.

• Because of cohesion and adhesion.

• Because of the shape of the jar.

What property of water allows it to appear higher than the top of a glass?

• Surface tension

• Adhesion

• Cohesion

• Capillary action

How many paper clips did the narrator fit into the glass of water?

• 25

• 15

• 10

• 20

What shape does the water form on top of the penny?

• Flat

• Square

• Triangle

• Dome

What is the term for the stronger attraction of water molecules at the surface?

• Adhesion

• Cohesion

• Surface tension

• Capillary action

What happens to the paper clip when dish soap is added to the water?

• It dissolves.

• It stays in place.

• It sinks immediately.

• It floats higher.

What property allows water to move up a paper towel against gravity?

• Evaporation

• Adhesion

• Surface tension

• Cohesion

What is the term for water's ability to stick to other substances?

• Capillary action

• Cohesion

• Adhesion

• Surface tension

What causes the properties of cohesion and adhesion in water molecules?

• The shape of the water molecules

• The size of the water molecules

• The temperature of the water

• The polarity of the water molecules