Properties of Water

Capillary action is the result of adhesion. Which aspect of water is responsible for this?

• Nonpolar covalent bonds that enable water to dissolve other substances
  
• Polar covalent bonds that join molecules of water to other substances
• Hydrogen bonds between water and another substance
• Ionic bonds that enable electrons to flow through water and into another substance

Which of the following properties of water enables it to move from the roots to the leaves of plants?

• Water expands as it freezes.
• Water is an excellent solvent.
• Water exhibits cohesive behavior.
• Water moderates temperature.

What property of water allows it to be such a versatile solvent that it is often called the "universal solvent?"

• Purity
• Polarity and cohesion
• High heat capacity
• Expansion upon freezing

Tags

NGSS.HS-PS1-2

Attractions between water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

Tags

NGSS.HS-PS1-3

Which is NOT a unique property of water?

• Frozen water floats on liquid water.
• Water covers most of the Earth’s surface and retains a large amount of heat.
• Water molecules stick to each other through hydrogen bonds.
• Water cools very rapidly.

Tags

NGSS.HS-ESS2-5

Water molecules are able to form hydrogen bonds with

• compounds that have polar covalent bonds

• oils

• oxygen gas (O2 molecules)

• Chloride ions

• any compound that is not soluble in water

Which of the following effects is produced by the high surface tension of water?

• Lakes don't freeze solid in winter, despite low temperatures

• A water strider can walk across the surface of a small pond

• Water flows upward from the roots to the leaves in plants

• Organisms resist temperature changes, although they give off heat due to chemical reactions

• Evaporation of sweat from the skin helps to keep people from overheating

Why does ice float in liquid water?

• The high surface tension of liquid water keeps the ice on top

• The ionic bonds between the molecules in ice prevent the ice from sinking

• Ice always has air bubbles that keep it afloat

• Hydrogen bonds stabilize and keep the molecules of ice farther apart than the water molecules of the liquid water

• The crystalline lattice of ice causes it to be denser than liquid water

Hydrophobic substances such as vegetable oil are

• nonpolar substances that repel water molecules

• nonpolar substances that have an attraction for water molecules

• polar substances that repel water molecules

• polar substances that have an affinity for water

• charged molecules that hydrogen-bond with water molecules

Based on your knowledge of the polarity of water molecules, the solute molecule depicted here is most likely

• positively charged

• negatively charged

• without charge

• hydrophobic

• nonpolar