Home > 3: Water and the Fitness of the Environment > Activities Quiz
 
 
Chapter 3: Water and the Fitness of the Environment
 
Activities Quiz
 

Activities Quiz


1 .       Each water molecule is joined to _____ other water molecules by ____ bonds. (Activity: The Polarity of Water) 

 two ... hydrogen
 four ... hydrogen
 three ... ionic
 four ... polar covalent
 two ... polar covalent
2 .       The unequal sharing of electrons within a water molecule makes the water molecule _____. (Activity: The Polarity of Water) 

 change easily from a liquid to gaseous form
 ionic
 hydrophobic
 polar
 have a low surface tension
3 .       The tendency of an atom to pull electrons toward itself is referred to as its _____. (Activity: The Polarity of Water) 

 electronegativity
 covalency
 ionic potential
 polarity
 tonicity
4 .       In this molecule, what type of bond is found between the oxygen and hydrogens? (Activity: The Polarity of Water)

question #4 

 polar covalent
 hydrophobic
 ionic
 hydrophilic
 nonpolar covalent
5 .       Which of these bonds is weakest? (Activity: The Polarity of Water) 

 answer #1
 answer #2
 answer #3
 answer #4
 answer #5
6 .       Why isn't this insect drowning? (Activity: The Polarity of Water)

question #6 

 Surface tension.
 The insect is very light.
 It is difficult to change the temperature of water.
 The insect is swimming.
 The insect is flying just above the water surface.
7 .       Click on the diagram to start the animation. What process is illustrated by this animation? (Activity: Cohesion of Water)

 

 push
 antigravity
 evaporation
 precipitation
 gravity
8 .       What name is given to this molecule? (Activity: Dissociation of Water Molecules)

question #8 

 water
 methane
 hydronium ion
 glucose
 hydroxide ion
9 .       How did this molecule form? (Activity: Dissociation of Water Molecules)

question #9 

 Two water molecules bonded.
 A water molecule gained an hydrogen ion from another water molecule.
 Evaporation.
 A hydrogen molecule bonded with an OH- molecule.
 A water molecule split in half.
10 .       What name is given to this molecule? (Activity: Dissociation of Water Molecules)

question #10 

 water
 DNA
 hydronium ion
 glucose
 hydroxide ion
11 .       Click on the diagram to begin the animation. This animation illustrates the _____ of water. (Activity: Dissociation of Water Molecules)

 

 surface tension
 adhesion
 cohesion
 specific heat
 dissociation
12 .       Which of these is the correct equation for the dissociation of water? (Activity: Dissociation of Water Molecules) 

 H2O + H2O <==> H3O+ + OH-
 H+ <==> H2O + H2O+
 H2O + H2O+ <==> H2O + OH-
 H2O <==> H+ + OH-
 H2O + OH- <==> H2O+
13 .       What is the charge on a hydronium ion? (Activity: Dissociation of Water Molecules) 

 1+
 2+
 0
 1-
 2-
14 .       What is the charge on a hydroxide ion? (Activity: Dissociation of Water Molecules) 

 1+
 2+
 0
 1-
 2-
15 .       About _____ molecules in a glass of water are dissociated. (Activity: Dissociation of Water Molecules) 

 1 in 1,000,000,000
 1 in 1,000,000
 1 in 5,000,000
 1 in 2
 1 in 500,000,000
16 .       What is the arrow pointing to? (Activity: Acids, Bases, and pH)

question #16 

 water molecule
 hydroxide ion
 electron
 hydrogen ion
 hydronium ion
17 .       What is the arrow pointing to? (Activity: Acids, Bases, and pH)

question #17 

 hydrogen ion
 proton
 hydroxide ion
 hydronium ion
 water
18 .       In a neutral solution the concentration of _____. (Activity: Acids, Bases, and pH) 

 hydrogen ions is equal to the concentration of hydroxide ions
 water molecules is less than the concentration of hydrogen ions
 hydrogen ions is less than the concentration of hydroxide ions
 water molecules is less than the concentration of hydroxide ions
 hydrogen ions is greater than the concentration of hydroxide ions
19 .       How does the pH of the solution on the right compare with that of the solution on the left? (Activity: Acids, Bases, and pH)

question #19 

 The solution on the right is neutral relative to the solution on the left.
 Both of these solutions are equally acidic.
 The solution on the right is basic relative to the solution on the left.
 Both of these solutions are equally basic.
 The solution on the right is acidic relative to the solution on the left.





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