Surface Tension - Part 2: Milk Swirls

The video tutorial explores the concept of surface tension and how it can be reduced by adding soap. It provides a step-by-step demonstration using milk, food coloring, and dish detergent to create colorful patterns. The tutorial encourages experimentation by changing variables like the type of milk used. The demonstration is safe and easy to perform, making it an engaging way to learn about surface tension and chemical reactions.

What is the primary effect of adding soap to a liquid surface?

• It makes the liquid evaporate faster.

• It changes the color of the liquid.

• It decreases the surface tension.

• It increases the surface tension.

Which of the following materials is NOT needed for the soap and milk experiment?

• Milk

• Food coloring

• Q-tips

• Safety goggles

How does soap affect the fat particles in milk during the experiment?

• It changes their color.

• It makes them dissolve completely.

• It makes them sink to the bottom.

• It causes them to move around.

What happens when food coloring is added to the milk in the experiment?

• It sinks to the bottom.

• It creates swirls and patterns.

• It forms a solid layer on top.

• It evaporates quickly.

What is one way to modify the experiment to explore different results?

• Use a different type of soap.

• Change the type of milk used.

• Use a larger bowl.

• Add more Q-tips.