Understanding Steam, Polarity, and Density

Hank Green addresses questions from the previous Crash Course Biology episode. He explains chemical polarity, discusses the possibility of life based on elements other than water and carbon, clarifies misconceptions about steam, and corrects an error regarding ice density and sea level. He concludes by acknowledging the team behind the production.

What does it mean for a molecule to be polar?

• It has equal distribution of charges.

• It has a positive and a negative side.

• It is always negatively charged.

• It is always positively charged.

Why do molecules exhibit polarity?

• Due to uneven electron distribution.

• Due to their magnetic properties.

• Because they are always in a gaseous state.

• Because of equal electron distribution.

What is Hank Green's initial reaction to the idea of life based on elements other than water and carbon?

• He thinks it is impossible.

• He is indifferent to the idea.

• He believes it is highly likely.

• He is certain it is already proven.

What is the common misconception about steam?

• It is a type of ice.

• It is a fine liquid.

• It is a type of metal.

• It is a solid.

What is the scientific definition of steam?

• Solid water.

• Liquid water droplets.

• Frozen water.

• Gaseous water.

What would happen if you entered a room filled with actual steam?

• You would be severely harmed.

• You would be unharmed.

• You would feel cold.

• You would feel relaxed.

What was the correction made about ice density?

• Icebergs would raise sea levels if denser.

• Icebergs would float higher if denser.

• Icebergs would not raise sea levels if denser.

• Icebergs would melt faster if denser.

What happens to an ice cube's displacement if it is denser than water?

• It does not displace any water.

• It displaces the same amount of water.

• It displaces more water.

• It displaces less water.

Who is responsible for editing the Crash Course videos?

• Amber

• Blake

• Nick

• Jenkins

Who helps with the graphics for the Crash Course videos?

• Hank and Martin

• Jesslyn and Blake

• Amber and Pete

• Nick and Jenkins