Properties of Water

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.

Large bodies of water do not quickly fluctuate in temperature. Why?

• Water is a solvent.

• Water has a high heat capacity.

• Water acts as a buffer.

• Water is non-polar.

What two elements make up water?

• Helium and oxygen

• Hydrogen and oxygen

• helium and carbon

• oxygen and carbon

What word describes when water is attracted to other substances?

• cohesion

• adhesion

• capillary action

• surface tension

Why does water move from the roots to the leaves of plants?

• Water is pushed by solutes

• Capillary action pulls the water molecules like a chain

• Water is pulled by gravity

• Water’s cohesion causes it to “pull” towards the leaves

Attractions between water molecules are called

• Covalent bonds

• Ionic bonds

• Polar bonds

• Hydrogen bonds

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.

What property of water helps to moderate earth's temperature?

• adhesion

• chohesion

• Specific heat capacity

• Latent heat of vaporization

Why does ice float?

• As water freezes, it expands and its density decreases.

• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.

• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.

• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

tendency of molecules of the same kind to stick to one another

• cohesion

• adhesion

• solution

• polar molecule