Water properties

What is the reason why oil and water don't mix?

• Oil is too heavy to mix with water

• Water can only mix with polar or ionic molecules 

• Water can only mix with non-polar molecules

• Oil is too light to mix with water 

What word describes when water is attracted to other substances?

• Cohesion

• Adhesion

• Capillary action

• Surface tension

The tightness across the surface of water that enables insects to walk on it is

• Adhesion

• Capillary action

• Surface tension

• Polarity

molecule in which opposite ends have opposite electric charges

• cohesion
• polar molecule
• hydrogen bond
• solution

The fact that ice floats on liquid water is due to the fact that water's solid form is _____________ than its liquid form.

• Less polar

• More polar

• Less dense

• More dense

Surface tension of water is the cohesive force between water molecules and other molecules.

• True

• False

What type of bond is found BETWEEN water molecules?

• Hydrogen bonds

• Ionic bonds

• Nonpolar covalent bonds

• Polar covalent bonds

Why is it helpful to nature that ice floats?

• fish swim around the ice
• fish swim on top of the ice
• fish swim underneath the ice
• ice doesn't float

Which end of the water molecule has a slightly positive charge?

• the oxygen end
• the hydrogen end
• both ends are slightly positive
• neither end is positive

When water molecules stick easily to other water molecules, this is called what?

• Cohesion

• Adhesion

• Solution

• Polar molecule