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 Blank

The hydrogen and oxygen atoms are held together by ___________ bonds.

Fill in the Blank

The electrons are not shared equally creating a ________ molecule.

Fill in the Blank

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

Fill in the Blank

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

Fill in the Blank

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 Blank

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