Water Properties Chemistry

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.

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

• adhesion

• cohesion

• Specific heat capacity

• Latent heat of vaporization

What kind of molecule is water?

• Polar Covalent

• Nonpolar Covalent

• Metallic

Which part of a water molecule has a slightly Positive Charge?

• The Hydrogen

• The Oxygen

• The Top

• The Bottom

Water is a universal solvent because it...

• It can be found anywhere

• It freezes when it gets cold

• floats when frozen

• Dissolves most substances

The fact that ice floats on liquid water is due to the fact that water's solid state is ___________ than it's liquid state

• less polar

• more polar

• less dense

• more dense

If salt is dissolved in water, water is the ____________

• Solute

• Solvent

• Suspension

The physical property of water that allows it to stick to other polar substances is referred to as:

• Cohesion

• Adhesion

• Density

What is the primary reason water has a high specific heat capacity?

• A) Water molecules form hydrogen bonds that absorb heat.

• B) Water molecules are nonpolar and do not interact with heat.

• C) Water molecules are small and move quickly, absorbing heat.

• D) Water molecules have a high density, which absorbs heat.

Which property of water allows insects to walk on its surface?

• A) High specific heat

• B) Surface tension

• C) Solvent ability

• D) Density