BSC2010 FSU DENNIS FINAL EXAM 2026
ACTUAL PAPER QUESTIONS ANSWERS
GRADED A+
◉ What has the smallest total mass? Answer: two electrons
◉ What is true of an atom of Carbon that has 6 protons, 6 neutrons,
and 6 electrons? Answer: It has an atomic number of 6.
◉ How is a covalent bond formed? Answer: two atoms share two
electrons [one each]
◉ What atomic structure is shown in blue? Answer: Electron
◉ In polar covalent bonds, an atom can have a partial positive
charge when it: Answer: shares an electron with a more
electronegative atom
◉ What element does not react with other elements? [hint: atoms of
this element have already a complete valence shell] Answer: helium
◉ The fact that oxygen is an atom that is strongly electronegative
means that __________. Answer: it more strongly pulls shared electrons
,toward itself when forming a covalent bond with a less
electronegative atom
◉ Adjacent water molecules interact through the ________. Answer:
electrical attraction between the hydrogen of one water molecule
and the oxygen of another water molecule
◉ The hydrogen and oxygen atoms of a water molecule are held
together by ________ bonds. Answer: covalent
◉ What is the pH of a solution with a hydroxyl ion (OH-)
concentration of 10^(-10) M? Answer: pH 4
◉ A solution contains 0.0001 moles of hydrogen ions [H+] per liter.
Which of the following best describes this solution? Answer: the
solution is acidic because it contains a H+ donor
◉ What is the concentration of hydroxide ions [OH-] in a solution of
pH 5? Answer: 10^(-9) M
◉ Consider two solutions: solution X has a pH of 4; solution Y has a
pH of 7. From this information, we can reasonably conclude that
________. Answer: the concentration of hydrogen ions in solution X is
1000 times as great as the concentration of hydrogen ions in
solution Y
, ◉ If you were a spider gliding across a pond in the summer in
Virginia, for what property of water would you be most grateful?
Answer: cohesion
◉ As water freezes, ________. Answer: its molecules move farther
apart
◉ Why do hydrophilic molecules dissolve easily in water? Answer:
Their polar groups form hydrogen bonds with water.
◉ How many electrons must one carbon atom share with other atom
or atoms to complete its valence shell? Answer: four
◉ What characteristic is responsible for the complexity and variety
of organic molecules? Answer: the chemical versatility of carbon
atoms
◉ What factor determines whether a carbon atom's covalent bonds
with other atoms are in a tetrahedral configuration or a planar
configuration? Answer: double bonds between the carbon atom and
other atoms
◉ The maximum number of hydrogen atoms in a non-cyclic
hydrocarbon with five carbons is ________.
ACTUAL PAPER QUESTIONS ANSWERS
GRADED A+
◉ What has the smallest total mass? Answer: two electrons
◉ What is true of an atom of Carbon that has 6 protons, 6 neutrons,
and 6 electrons? Answer: It has an atomic number of 6.
◉ How is a covalent bond formed? Answer: two atoms share two
electrons [one each]
◉ What atomic structure is shown in blue? Answer: Electron
◉ In polar covalent bonds, an atom can have a partial positive
charge when it: Answer: shares an electron with a more
electronegative atom
◉ What element does not react with other elements? [hint: atoms of
this element have already a complete valence shell] Answer: helium
◉ The fact that oxygen is an atom that is strongly electronegative
means that __________. Answer: it more strongly pulls shared electrons
,toward itself when forming a covalent bond with a less
electronegative atom
◉ Adjacent water molecules interact through the ________. Answer:
electrical attraction between the hydrogen of one water molecule
and the oxygen of another water molecule
◉ The hydrogen and oxygen atoms of a water molecule are held
together by ________ bonds. Answer: covalent
◉ What is the pH of a solution with a hydroxyl ion (OH-)
concentration of 10^(-10) M? Answer: pH 4
◉ A solution contains 0.0001 moles of hydrogen ions [H+] per liter.
Which of the following best describes this solution? Answer: the
solution is acidic because it contains a H+ donor
◉ What is the concentration of hydroxide ions [OH-] in a solution of
pH 5? Answer: 10^(-9) M
◉ Consider two solutions: solution X has a pH of 4; solution Y has a
pH of 7. From this information, we can reasonably conclude that
________. Answer: the concentration of hydrogen ions in solution X is
1000 times as great as the concentration of hydrogen ions in
solution Y
, ◉ If you were a spider gliding across a pond in the summer in
Virginia, for what property of water would you be most grateful?
Answer: cohesion
◉ As water freezes, ________. Answer: its molecules move farther
apart
◉ Why do hydrophilic molecules dissolve easily in water? Answer:
Their polar groups form hydrogen bonds with water.
◉ How many electrons must one carbon atom share with other atom
or atoms to complete its valence shell? Answer: four
◉ What characteristic is responsible for the complexity and variety
of organic molecules? Answer: the chemical versatility of carbon
atoms
◉ What factor determines whether a carbon atom's covalent bonds
with other atoms are in a tetrahedral configuration or a planar
configuration? Answer: double bonds between the carbon atom and
other atoms
◉ The maximum number of hydrogen atoms in a non-cyclic
hydrocarbon with five carbons is ________.
