Molten Aluminum vs Liquid Nitrogen (& Dry Ice!)

The video explores the reactions between molten aluminum and both dry ice and liquid nitrogen. It begins with the setup and purchase of dry ice, followed by experiments where molten aluminum is poured onto dry ice, resulting in interesting reactions due to carbon dioxide production. The video then examines the effects of pouring molten aluminum into liquid nitrogen, highlighting the significant temperature differences and rapid boiling. The experiments conclude with observations and insights into the reactions.

What was the initial humorous encounter the narrator had during the setup?

• Finding a baby lizard in the fridge

• Spilling dry ice on the floor

• Accidentally melting a plastic cup

• Dropping the aluminum ingot

Why did the aluminum slide off the dry ice in the first experiment?

• The dry ice was too cold

• The aluminum was not hot enough

• A layer of carbon dioxide formed under the aluminum

• The dry ice melted too quickly

What was the result of placing dry ice into molten aluminum?

• Bubbles formed on the surface

• The aluminum exploded

• The aluminum solidified instantly

• The dry ice evaporated without a trace

What is the approximate temperature of molten aluminum?

• 800 degrees Fahrenheit

• 320 degrees Fahrenheit

• 1200 degrees Fahrenheit

• 500 degrees Fahrenheit

What was the main observation when molten aluminum was poured into liquid nitrogen?

• The nitrogen turned into a solid

• The aluminum floated on top

• The liquid nitrogen boiled rapidly

• The aluminum froze instantly

Why did the narrator use a remote pouring device in the final experiment?

• To avoid spilling the liquid nitrogen

• To ensure precise pouring

• To prevent an aluminum explosion

• To avoid getting too close to the heat

What was the reason the liquid nitrogen did not come into direct contact with the aluminum?

• The nitrogen evaporated instantly

• The aluminum cooled too quickly

• The nitrogen gas formed a barrier

• The aluminum was too dense