Bouncy Liquid Metal

The video begins with the speaker discussing their recent move to a new house. They then introduce an experiment involving gallium, inspired by an online video. Initially, the experiment fails, but after adding sulfuric acid, the gallium forms perfect spheres. The speaker explains the chemical reaction, highlighting the formation of gallium sulfate, which increases surface tension. The video concludes with a preview of future projects, including a homemade laser.

What was the initial problem the narrator faced with the gallium experiment?

• The gallium evaporated quickly.

• The gallium formed a single large sphere immediately.

• The gallium clumped together and didn't form spheres.

• The gallium reacted violently with water.

What substance did the narrator add to the gallium to improve the experiment?

• Hydrochloric acid

• Baking soda

• Sulfuric acid

• Sodium chloride

What effect does sulfuric acid have on gallium in the experiment?

• It dissolves the gallium completely.

• It forms a skin of gallium sulfate, increasing surface tension.

• It changes the color of gallium.

• It increases the gallium's temperature.

What did the narrator fill the toy with instead of colored water and oil?

• Water and vinegar

• Gallium and sulfuric acid

• Sand and water

• Mercury and mineral oil

What is the power of the laser built by the narrator?

• 10 Watt

• 20 Watt

• 30 Watt

• 40 Watt