Γιατί ο πάγος επιπλέει;

Ποιο είναι το πιο άφθονο μόριο στο σώμα μας;

• Οξυγόνο

• Διοξείδιο του άνθρακα

• νερό

• Άζωτο

What happens to the kinetic energy of water molecules as the temperature decreases?

• Increases

• Remains constant

• Fluctuates

• Decreases

What kind of bond does water have that most other substances don't?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

At what temperature does the kinetic energy of water molecules start to fall below the energy of the hydrogen bonds?

• 4 degrees Celcius

• 2 degrees Celcius

• 0 degrees Celcius

• 6 degrees Celcius

What is the molecular structure of solid water, ice, like?

• Tetrahedral

• Cubic

• Hexagonal

• Disordered

What would happen if ice did not float on water?

• Lobster rolls would disappear

• Canadian kids would lose their winter activities

• The ocean floor would be the coldest part of the ocean

• All of the above

What would happen to the white polar ice caps if ice did not float on water?

• They would disappear

• They would remain the same

• They would change color

• They would grow larger

What would be the impact on the oceans if ice did not float on water?

• They would become warmer

• They would freeze completely

• They would lose their ability to regulate the atmosphere

• They would disappear