Dandelion Behavior in Soapy Water

The video demonstrates an experiment with a dandelion seed head submerged in water. Initially, the dandelion remains dry due to hydrogen bonding among water molecules. When soap is added, these bonds weaken, causing the dandelion to collapse and get wet. The video explains the science behind this phenomenon and concludes with a comparison of the dandelion's state before and after adding soap.

What happens to the dandelion when it is submerged in water?

• It sinks to the bottom immediately.

• It changes color.

• It retains its shape and stays dry.

• It dissolves completely.

What is the primary reason the dandelion remains dry when removed from water?

• The dandelion is waterproof.

• The dandelion absorbs the water.

• The water evaporates quickly.

• Hydrogen bonds between water molecules form a protective web.

What role do hydrogen bonds play in the dandelion experiment?

• They cause the dandelion to change color.

• They make the water evaporate.

• They form a web that keeps the dandelion dry.

• They dissolve the dandelion.

How does adding soap to the water affect the dandelion?

• It weakens the hydrogen bonds, causing the dandelion to collapse.

• It strengthens the hydrogen bonds.

• It makes the dandelion float.

• It changes the color of the dandelion.

What is the unexpected result when the dandelion is removed from soapy water?

• It remains dry.

• It collapses and becomes wet.

• It changes color.

• It floats on the water surface.