Upgrade to remove ads
Bio. Chapter 3
Terms in this set (22)
In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by
polar covalent bonds.
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?
What is an effect of the high surface tension of water?
A water strider can walk across the surface of a small pond.
What takes place as an ice cube cools a drink?
Kinetic energy in the drink decreases.
Water's high specific heat is mainly a consequence of the
absorption and release of heat when hydrogen bonds break and form.
What type of bond must be broken for water to vaporize?
Temperature usually increases when water condenses. What behavior of water is most directly responsible for this phenomenon?
The release of heat by the formation of hydrogen bonds.
Why does ice float in liquid water
Hydrogen bonds stabilize and keep the of ice farther apart than the water molecules of liquid water.
Hydrophobic substances such as vegetable oil are
nonpolar substances that repel water molecules.
How many molecules of glucose (C6H2)6 molecular mass = 180 daltons) would be present in one mole of glucose?
6.02 x 10 ^23.
The molar mass of glucose (C6H12O6) is 180 g/mol. What procedure should you carry out to make a 0.5 M solution of glucose?
Dissolve 180 g of glucose in water, and then add more water until the total volume of the solution is 1 L.
The molar mass of glucose (C6H12O6) is 180 g/mol. What procedure should you cary out to make a 0.5 M solution of glucose
Dissolve 90 g of glucose in a small volume of water, and then add more water until the total volume of the solution is 1 L.
What ionizes completely in solution and is considered to be a strong acid?
What ionizes completely in a solution and is considered to be a strong base (alkali)?
A solution contains 0.0000001 (10^-7)moles of hydroxyl ions [OH-] per liter. What best describes this solution?
What is the pH of a solution with a hydroxyl ion [OH-] ocncentration of 10^-12 M?
What is the pH of a solution with a hydrogen ion [H+] concentration of 10^-8 M?
One liter of a solution of pH 2 has how many more hydrogen ions (H+) than 1 L of a solution of pH 6?
10,000 times more.
What is true about buffer statements?
They maintain a relatively constant pH when either acids or bases are added to them.
If the pH of blood drops, one would expect
the HCO3- to act as a base and remove excess H+ with the formation of H2CO3.
What prediction can we make about the pH of blood as that blood first comes in contact with respiring cells?
Blood pH will decrease slightly.
What is an example of a hydrophobic material?
THIS SET IS OFTEN IN FOLDERS WITH...
Bio. Chapter 5
A.P. Bio. Chapt. 13
A.P. Bio. Chapt. 15
Bio I Exam
OTHER SETS BY THIS CREATOR
Spanish 201 Final
Spanish 201 Leccion Vocab. Examen #3
Spanish 201 Leccion Vocab. Examen #2
Spanish 201 Leccion 1 Vocab.
OTHER QUIZLET SETS
Orgo Chemistry Unit 1
Intro Social Work
Chapter 15 vocabulary - 6th