Properties of Water

Properties of Water

Unit 1: Biochemistry

Multiple Choice

Which of the following describes a hydrogen bond?

• a. the bond between two hydrogen atoms within a molecule of water

• b. the bond between hydrogen in one water molecule and another hydrogen in a different water molecule

• c. the bond between hydrogen and oxygen within a molecule of water

• d. the bond between hydrogen in one water molecule and oxygen in a different water molecule

Multiple Choice

Which property of water provides the cooling effect of sweating?

• a. cohesiveness

• b. surface tension

• c. high heat of vaporization

• d. adhesiveness

Multiple Choice

Which of the following is an example of heat capacity/specific heat?

• a. ice floats in water

• b. sweating lowers body temperature.

• c. sugar disappears when added to water.

• d. it takes several weeks of warm temperatures to raise lake water several degrees.

Multiple Choice

Which property of water helps to explain that it takes a bit of time for a pot of water to boil?

• a. adhesion

• b. density

• c. specific heat

• d. universal solvent

Multiple Choice

Water molecules move farther apart when water freezes, causing it to expand. Which of the following is a consequence of this property?

• Only a limited amount of solute can be dissolved in a sample of water.

• Objects with a higher density than water can be observed floating on water.

• The water in lakes, ponds and puddles freezes from top down.

• Water is considered to be a universal solvent.

Multiple Choice

Water makes an upward curved meniscus in a graduated cylinder. What property of water accounts for the attraction of the water to the glass?

• Adhesion

• Cohesion

• Hydrogen bonds

• Polar covalent bonds

  
  

Multiple Choice

Water has a high surface tension. What property of water allows an insect to walk on water?

• Adhesion

• Cohesion

• Polar covalent bonds

• Non-polar covalent bonds

  
  

Multiple Choice

Water is a polar molecule that attracts other polar molecules. Which of the following is a consequence of this property?

• Water is considered to be a universal solvent.

• Water can only dissolve a limited amount of solute.

• When water freezes, the molecules move farther apart.

• The water in lakes, ponds and puddles freezes from top down.

Fill in the Blanks

The hydrogen and oxygen atoms are held together by

bonds.

Fill in the Blanks

The electrons are not shared equally creating a

molecule.

Fill in the Blanks

The polarity of water allows it to _________ most substances. Because of this it is referred to as the ________ _________.

Fill in the Blanks

Water molecules stick to other water molecules. This property is called

.

Fill in the Blanks

Hydrogen bonds form between adjacent water molecules because the ______ charged hydrogen end of one water molecule attracts the _________ charged oxygen end of another water molecule.

Fill in the Blanks

Water molecules stick to other materials due to its polar nature. This property is called

.