Water Molecule Model Building

The average human body is what percent water by volume?

• 55%

• 35%

• 70%

• 80%

What type of bond is between the one oxygen atom and the two hydrogen atoms in a water molecule?

• ionic

• dipole

• hydrogen

• covalent

The oxygen and hydrogen atoms share electrons but they do not share the electrons evenly.

• True

• False

• Sometime True

• Depends on the temperature

Why do the electrons spend a greater amount of time on the oxygen side of the molecule?

• Because oxygen has 8 proton and hydrogen only has 1 proton.

• Because oxygen and hydrogen form an ionic bond

• Because hydrogen does not like electrons.

• Electrons actually spend more time with the hydrogen than the oxygen.

A molecule with an uneven distribution of charge is known as a ______ molecule.

• cohesive

• adhesive

• ionic

• polar

What type of bonding gives water it's cohesion property?

• covalent bonding

• ionic bonding

• hydrogen bonding

• metallic bonding

__________ is the property of like molecules sticking together.

• Adhesion

• Cohesion

• Hydration

• Polarity

Why is water called the greatest solvent on Earth?

• Because it can be a solid, liquid, or gas.

• Because roots can draw it into plants.

• Because of its ability to dissolve so many substances.

• Because it has two hydrogen atoms in its molecule.

What do water molecules form when they surround each ion during dissociation?

• a hydrogen bond

• a polar bond

• a hydration sphere

• a popsicle

What is the property called when dissimilar molecules stick together?

• adhesion

• cohesion

• polarity

• modeling