Chapter 3 Questions - Ch 3 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question 1 In a

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Ch 3 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. In a single molecule of water, the two hydrogen atoms are bonded to a single oxygen atom by a. hydrogen bonds. b. nonpolar covalent bonds. c. polar covalent bonds. d. ionic bonds. e. van der Waals interactions. ____ 2. The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. What is this attraction called? a. a covalent bond b. a hydrogen bond c. an ionic bond d. a hydrophilic bond e. a hydrophobic bond ____ 3. An example of a hydrogen bond is the bond between a. C and H in methane (CH 4 ). b. the H of one water molecule and the O of another water molecule. c. Na + and Cl - in salt. d. the two hydrogen atoms in a molecule of hydrogen gas (H 2 ). e. Mg + and Cl - in MgCl 2 . ____ 4. Water is able to form hydrogen bonds because a. oxygen has a valence of 2. b. the water molecule is shaped like a tetrahedron. c. the bonds that hold together the atoms in a water molecule are polar covalent bonds. d. the oxygen atom in a water molecule has a weak positive charge. e. each of the hydrogen atoms in a water molecule is weakly negative in charge. ____ 5. What determines the cohesiveness of water molecules? a. hydrophobic interactions b. nonpolar covalent bonds c. ionic bonds d. hydrogen bonds e. both A and C ____ 6. What do cohesion, surface tension, and adhesion have in common with reference to water? a. All increase when temperature increases. b. All are produced by ionic bonding. c. All are properties related to hydrogen bonding. d. All have to do with nonpolar covalent bonds. e. C and D only ____ 7. Which of the following is possible due to the high surface tension of water? a. Lakes don't freeze solid in winter, despite low temperatures. b. A water strider can walk across the surface of a small pond. c. Organisms resist temperature changes, although they give off heat due to chemical reactions. d. Water can act as a solvent. e. The pH of water remains exactly neutral.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
____ 8. Which of the following is true when an ice cube cools a drink? a. Molecule collisions in the drink increase. b. Kinetic energy in the drink decreases. c. A calorie of heat energy is transferred from the ice to the water of the drink. d. The specific heat of the water in the drink decreases. e. Evaporation of the water in the drink increases. ____ 9. Which of the following is a correct definition of a kilocalorie? a. the amount of heat required to raise the temperature of 1 g of water by 1°F b. the amount of heat required to raise the temperature of 1 g of water by 1°C c. the amount of heat required to raise the temperature of 1 kg of water by 1°F d. the amount of heat required to raise the temperature of 1 kg of water by 1°C e. the amount of heat required to raise the temperature of 1,000 g of water by 1°F ____ 10. The nutritional information on a cereal box shows that one serving of a dry cereal has 200 kilocalories. If one
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/13/2010 for the course ACT 101 taught by Professor Jenkins during the Spring '10 term at Alabama State University.

Page1 / 8

Chapter 3 Questions - Ch 3 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question 1 In a

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online