+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
Why does ice float in liquid water?
|
Hydrogen bonds stabilize and keep the molecules of ice farther apart than the water molecules of liquid water.
|
|
Hydrophobic substances such as vegetable oil are
|
Nonpolar substances that repel water molecules.
|
|
Which of the following solutions has the greatest concentration of hydrogen ions?
|
Gastric juice at ph 2
|
|
Which of the following solutions has the greatest concentration of hydroxide ions?
|
Seawater at ph 8
|
|
If the pH of a solution is decreased from 9 to 8, it means that the
|
B and D are correct (concentration of H+ has increased 10 times what it was at pH 9, concentration of OH- has decreased 10 times what it was at pH 9)
|
|
Which of the following statements is true about buffer solutions?
|
They maintain a relatively constant pH.
|
|
What is the reason why hydrocarbons are not soluble in water?
|
The majority of their bonds are nonpolar covalent carbon-to-hydrogen linkages.
|
|
Which two functional groups are always found in amino acids?
|
Carboxyl and amino
|
|
Which molecule is water-soluble because it has a hyodroxyl functional group?
|
Molecule A - see Fig 1
|
|
Which molecule has a carbonyl functional group in the form of a ketone?
|
Molecule C - see Fig 1
|
|
Which molecule has a carbonyl functional group in the form of an aldehyde?
|
Molecule B - see fig 1
|
|
Which molecule contains a carboxyl group?
|
Molecule D - see fig 1
|
|
Which molecule contains a sulfhydryl functional group?
|
Molecule B - see fig 2
|
|
Which molecule contains an amino functional group, but is not an amino acid?
|
Molecule A - see fig 2
|
|
Which molecule is an organic phosphate?
|
Molecule D - see fig 2
|
