Water Unique Properties Lesson

​Water is a Polar Molecule

Multiple Choice

What kind of bond is formed between the two hydrogen atoms and the single oxygen atom?

• hydrogen bonds

• polar covalent bonds

• ionic bonds

• non-polar covalent bonds

Multiple Choice

Which of the following properties of water is responsible for the formation of raindrops?

• Cohesion

• Adhesion

• high thermal energy

• high kinetic energy

Multiple Choice

What kind of bonds are responsible for the unique cohesion, surface tension, and adhesion properties of water molecules?

• hydrophobic bonding

• ionic bonding

• hydrogen bonding

• polar covalent bonding

Multiple Choice

Which answer best describes 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.

• Stable hydrogen bonds keep water molecules of ice farther apart than water molecules of liquid water.

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

Poll

How would acidification of seawater affect marine organisms?

• It will increase dissolved carbonate concentrations and promote faster growth of corals and shell-building animals.

• It will decrease dissolved carbonate concentrations and promote faster growth of corals and shell-building animals.

• It will increase dissolved carbonate concentrations and hinder growth of corals and shell-building animals.

• It will decrease dissolved carbonate concentrations and hinder growth of corals and shell-building animals.

Multiple Choice

Consider the following reaction at equilibrium: CO2 + H2O ⇔ H2CO3. What would be the effect of adding additional H2O?

• It would drive the equilibrium dynamics to the right.

• It would drive the equilibrium dynamics to the left.

• Nothing would happen because the reactants and products are in equilibrium.

• Reactions in both the directions will slow down.