Water: A Polar Molecule

Mr. Andersen explains water's polarity, its molecular structure, and the resulting properties such as cohesion, capillary action, and high specific heat. He discusses how these properties are crucial for life on Earth and explores water's role as a solvent. The video also highlights the significance of water in space exploration, particularly in the search for life on other planets.

What causes water to have partial positive and negative charges?

• Absence of electrons

• Equal sharing of electrons

• Unequal sharing of electrons

• Presence of free electrons

Which property of water is responsible for the formation of surface tension?

• Adhesion

• Evaporation

• Capillary action

• Cohesion

How does water move up through the tiny tubes in a tree?

• By adhesion only

• Through evaporation only

• By capillary action and cohesion

• Through gravitational pull

Why does water have a high specific heat?

• Due to its high density

• Because it is a non-polar molecule

• Because of its hydrogen bonds

• Due to its low density

What unique property of water prevents oceans from freezing solid?

• Water's high specific heat

• Water's ability to dissolve salts

• Water's high density

• Ice being less dense than liquid water

Why is water considered a good solvent?

• It has a low boiling point

• It can dissolve ionic and polar substances

• It is non-polar

• It can dissolve non-polar substances

What is the significance of finding water on other planets or moons?

• It shows the presence of ice

• It confirms the presence of hydrogen

• It suggests the possibility of life

• It indicates the presence of oxygen