Bio 1404 Exam 1 Jaffe Questions & Answers 100%
Solved
An atom has 6 electrons in its outer shell. How many unpair electrons does it have?
Correct Ans-2
Which of the following statements is true about buffer solutions? Correct Ans-They
maintain a relatively constant pH when either acids or bases are added to them
A solution contains 0.0000001(10^-7) moles of hydroxide ions (OH-) per liter. Which of the
following best describes this solution? Correct Ans-Neutral
In the figure above, how many electrons does nitrogen have in its valence shell? Correct
Ans-5
In the figure above, how many unpaired electrons does phosphorus have in its valence shell?
Correct Ans-3
A covalent bond is likely to be polar when Correct Ans-one of the atoms sharing electrons
is much more electronegative than the other atom
, Bio 1404 Exam 1 Jaffe Questions & Answers 100%
Solved
Fluorine has an atomic number of 9 and a mass number of 19. How many electrons are
needed to complete the valence shell of a fluorine atom? Correct Ans-1
What is the name of the functional group shown in the figure below? Correct Ans-Carboxyl
Which drawing in the figure above depicts the electron configuration of an atom that can
form covalent bonds with two hydrogen atoms? Correct Ans-C. ( the image that only has
two single electrons in the outer most shell )
Electrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient
energy, a possible result is that Correct Ans-An electron may move to an electron shell
farther away from the nucleus
Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to
one galactose molecule. How is lactose classified? Correct Ans-Disaccharide
Which of the following would be regarded as compounds? Correct Ans-H2O and CH4, but
no O2
Solved
An atom has 6 electrons in its outer shell. How many unpair electrons does it have?
Correct Ans-2
Which of the following statements is true about buffer solutions? Correct Ans-They
maintain a relatively constant pH when either acids or bases are added to them
A solution contains 0.0000001(10^-7) moles of hydroxide ions (OH-) per liter. Which of the
following best describes this solution? Correct Ans-Neutral
In the figure above, how many electrons does nitrogen have in its valence shell? Correct
Ans-5
In the figure above, how many unpaired electrons does phosphorus have in its valence shell?
Correct Ans-3
A covalent bond is likely to be polar when Correct Ans-one of the atoms sharing electrons
is much more electronegative than the other atom
, Bio 1404 Exam 1 Jaffe Questions & Answers 100%
Solved
Fluorine has an atomic number of 9 and a mass number of 19. How many electrons are
needed to complete the valence shell of a fluorine atom? Correct Ans-1
What is the name of the functional group shown in the figure below? Correct Ans-Carboxyl
Which drawing in the figure above depicts the electron configuration of an atom that can
form covalent bonds with two hydrogen atoms? Correct Ans-C. ( the image that only has
two single electrons in the outer most shell )
Electrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient
energy, a possible result is that Correct Ans-An electron may move to an electron shell
farther away from the nucleus
Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to
one galactose molecule. How is lactose classified? Correct Ans-Disaccharide
Which of the following would be regarded as compounds? Correct Ans-H2O and CH4, but
no O2
