CHEM 1010 FINAL EXAM QUESTIONS
& ELABORATED COMPLETE
SOLUTIONS RATED 100% CORRECT
Which of the following would be considered applied research? - Correct Answer ✔✔
determining the lightest and strongest metal to be used for an airplane wing
Why is the process of science not restricted to any one particular method? - Correct
Answer ✔✔ The scientist needs to be open to all possibilities and different ways of
doing science in order to gain as much knowledge as possible from his or her research.
During which of the scientific activities does the scientist come up with an hypothesis? -
Correct Answer ✔✔ A hypothesis can come at any time, no matter what the scientist
may be doing.
Is chemistry the study of the submicroscopic, the microscopic, or the macroscopic, or all
three? - Correct Answer ✔✔ All of the above because most everything is made of
atoms and molecules.
Harry Kroto began with an interest in ________. - Correct Answer ✔✔ identifying the
composition of interstellar dust
An old remedy for separating a pair of nested drinking glasses stuck together is to run
water at one temperature into the inner glass and then run water at a different
temperature over the surface of the outer glass. Which water should be hot and which
should be cold? - Correct Answer ✔✔ fill the inner glass with cold water while running
hot water over the outer glass
How many joules are there in a candy bar containing 230,000 calories? 1 cal = 4.184 J -
Correct Answer ✔✔ 960,000 joules
When a liquid evaporates, the vapor expands because ________. - Correct Answer ✔✔
the gas particles have more kinetic energy than the liquid particles
Which of the following is the least amount of energy? - Correct Answer ✔✔ 1.0 joule
Which of the following has the largest density? - Correct Answer ✔✔ a 10-g object with
a volume of 1 mL
Which of the following would best describe heat? - Correct Answer ✔✔ Heat is energy
that moves from high to low temperature objects.
,A TV screen looked at from a distance appears as a smooth continuous flow of images.
Up close, however, we see this is an illusion. What really exists are a series of tiny dots
(pixels). This is similar to a chemist's view of matter in that ________. - Correct Answer
✔✔ on the submicroscopic level, chemist's find that matter is made of extremely small
particles, such as atoms and molecules.
The gravity of the moon is 1/6 that of Earth's. If your mass is 65 kilograms on Earth,
what is your mass on the moon? - Correct Answer ✔✔ 65 kg
The scanning tunneling microscope creates images of atoms by ________. - Correct
Answer ✔✔ passing an electric current between the tip of an ultrathin needle and some
conducting surface
Which of the following is generally true regarding the relationships of the density of an
object and its massiveness? - Correct Answer ✔✔ A denser object is not necessarily
always more massive.
Which has more total energy: a cup of boiling water at 100°C or a swimming pool of
slightly cooler water at 90°C? - Correct Answer ✔✔ The swimming pool at 90°C has
more energy.
Which of the following is an example of something with potential energy?
- a boulder at the top of a cliff
- an arrow poised in a stretched bow
- chemical bonds
- all of the above - Correct Answer ✔✔ all of the above
Which of the following would not be considered a physical property? - Correct Answer
✔✔ temperature at which a material catches on fire
Half-frozen fruit punch is always sweeter than the same fruit punch completely melted
because ________. - Correct Answer ✔✔ crystallization is a purifying process
How many different elements are in the compound C6H12O6? - Correct Answer ✔✔ 3
Elements that are in the same ________ have a tendency to have very similar chemical
properties due to periodic trends. - Correct Answer ✔✔ Group
Water and ethanol can be separated by heating the ethanol until it boils away from the
water. What type of change is this? - Correct Answer ✔✔ a physical change
Which of these properties describes a metal? - Correct Answer ✔✔ conducts heat very
well
What is the name of the following compound?
, CO2 - Correct Answer ✔✔ carbon dioxide
Which of the following elements will most likely be shiny and flexible? - Correct Answer
✔✔ rhodium (Rh)
Which atom is largest?
- Rb
-K
- Na
- Li - Correct Answer ✔✔ Rb
A sample of iron weighs more after it rusts because ________. - Correct Answer ✔✔ of
the additional oxygen it contains
What do chicken noodle soup and garden soil have in common? - Correct Answer ✔✔
They are both examples of heterogeneous mixtures.
Which of the following is a metal? - Correct Answer ✔✔ titanium (atomic no. = 22)
The energy level diagram ranks orbitals by their ________. - Correct Answer ✔✔
average distance from the nucleus
Which of the following statements does not describe a proton? - Correct Answer ✔✔ It
orbits around the nucleus of an atom
How is it possible for an atom to emit visible light even though the atom is smaller than
the wavelength of visible light? - Correct Answer ✔✔ Any charged object, including the
smallest atom, generates electromagnetic waves as it vibrates, which we observe in the
visible spectrum of an element.
Which element has the atomic number 12?
-Cl
-C
- Mg
- Na - Correct Answer ✔✔ Mg
If you remove two protons and two electrons from a sulfur atom (S), what new element
is formed? - Correct Answer ✔✔ Si
If two protons and two neutrons are removed from the nucleus of the oxygen-16
isotope, a nucleus of which element remains? - Correct Answer ✔✔ carbon-12
Boron has primarily two isotopes, one with an atomic mass of 11.0 amu and another
with an atomic mass of 10.0 amu. If the abundance of the boron atom with a mass of
& ELABORATED COMPLETE
SOLUTIONS RATED 100% CORRECT
Which of the following would be considered applied research? - Correct Answer ✔✔
determining the lightest and strongest metal to be used for an airplane wing
Why is the process of science not restricted to any one particular method? - Correct
Answer ✔✔ The scientist needs to be open to all possibilities and different ways of
doing science in order to gain as much knowledge as possible from his or her research.
During which of the scientific activities does the scientist come up with an hypothesis? -
Correct Answer ✔✔ A hypothesis can come at any time, no matter what the scientist
may be doing.
Is chemistry the study of the submicroscopic, the microscopic, or the macroscopic, or all
three? - Correct Answer ✔✔ All of the above because most everything is made of
atoms and molecules.
Harry Kroto began with an interest in ________. - Correct Answer ✔✔ identifying the
composition of interstellar dust
An old remedy for separating a pair of nested drinking glasses stuck together is to run
water at one temperature into the inner glass and then run water at a different
temperature over the surface of the outer glass. Which water should be hot and which
should be cold? - Correct Answer ✔✔ fill the inner glass with cold water while running
hot water over the outer glass
How many joules are there in a candy bar containing 230,000 calories? 1 cal = 4.184 J -
Correct Answer ✔✔ 960,000 joules
When a liquid evaporates, the vapor expands because ________. - Correct Answer ✔✔
the gas particles have more kinetic energy than the liquid particles
Which of the following is the least amount of energy? - Correct Answer ✔✔ 1.0 joule
Which of the following has the largest density? - Correct Answer ✔✔ a 10-g object with
a volume of 1 mL
Which of the following would best describe heat? - Correct Answer ✔✔ Heat is energy
that moves from high to low temperature objects.
,A TV screen looked at from a distance appears as a smooth continuous flow of images.
Up close, however, we see this is an illusion. What really exists are a series of tiny dots
(pixels). This is similar to a chemist's view of matter in that ________. - Correct Answer
✔✔ on the submicroscopic level, chemist's find that matter is made of extremely small
particles, such as atoms and molecules.
The gravity of the moon is 1/6 that of Earth's. If your mass is 65 kilograms on Earth,
what is your mass on the moon? - Correct Answer ✔✔ 65 kg
The scanning tunneling microscope creates images of atoms by ________. - Correct
Answer ✔✔ passing an electric current between the tip of an ultrathin needle and some
conducting surface
Which of the following is generally true regarding the relationships of the density of an
object and its massiveness? - Correct Answer ✔✔ A denser object is not necessarily
always more massive.
Which has more total energy: a cup of boiling water at 100°C or a swimming pool of
slightly cooler water at 90°C? - Correct Answer ✔✔ The swimming pool at 90°C has
more energy.
Which of the following is an example of something with potential energy?
- a boulder at the top of a cliff
- an arrow poised in a stretched bow
- chemical bonds
- all of the above - Correct Answer ✔✔ all of the above
Which of the following would not be considered a physical property? - Correct Answer
✔✔ temperature at which a material catches on fire
Half-frozen fruit punch is always sweeter than the same fruit punch completely melted
because ________. - Correct Answer ✔✔ crystallization is a purifying process
How many different elements are in the compound C6H12O6? - Correct Answer ✔✔ 3
Elements that are in the same ________ have a tendency to have very similar chemical
properties due to periodic trends. - Correct Answer ✔✔ Group
Water and ethanol can be separated by heating the ethanol until it boils away from the
water. What type of change is this? - Correct Answer ✔✔ a physical change
Which of these properties describes a metal? - Correct Answer ✔✔ conducts heat very
well
What is the name of the following compound?
, CO2 - Correct Answer ✔✔ carbon dioxide
Which of the following elements will most likely be shiny and flexible? - Correct Answer
✔✔ rhodium (Rh)
Which atom is largest?
- Rb
-K
- Na
- Li - Correct Answer ✔✔ Rb
A sample of iron weighs more after it rusts because ________. - Correct Answer ✔✔ of
the additional oxygen it contains
What do chicken noodle soup and garden soil have in common? - Correct Answer ✔✔
They are both examples of heterogeneous mixtures.
Which of the following is a metal? - Correct Answer ✔✔ titanium (atomic no. = 22)
The energy level diagram ranks orbitals by their ________. - Correct Answer ✔✔
average distance from the nucleus
Which of the following statements does not describe a proton? - Correct Answer ✔✔ It
orbits around the nucleus of an atom
How is it possible for an atom to emit visible light even though the atom is smaller than
the wavelength of visible light? - Correct Answer ✔✔ Any charged object, including the
smallest atom, generates electromagnetic waves as it vibrates, which we observe in the
visible spectrum of an element.
Which element has the atomic number 12?
-Cl
-C
- Mg
- Na - Correct Answer ✔✔ Mg
If you remove two protons and two electrons from a sulfur atom (S), what new element
is formed? - Correct Answer ✔✔ Si
If two protons and two neutrons are removed from the nucleus of the oxygen-16
isotope, a nucleus of which element remains? - Correct Answer ✔✔ carbon-12
Boron has primarily two isotopes, one with an atomic mass of 11.0 amu and another
with an atomic mass of 10.0 amu. If the abundance of the boron atom with a mass of
