Chem 103 Final Exam | Verified Exam Questions and Answers | Latest
Updated Study Material 2026
Question:
Which statement is true about a nitrogen atom with 9 electrons
Answer:
Question:
A. It has a net charge of -2 B. It has a net charge of +2 C. It has a mass of 7 amu D. It also has 9 neutrons
E. It has 9 protons
Answer:
A. It has a net charge of -2
Question:
which one is not a physical property of water
Answer:
Question:
A. It freezes at 0 deg Celsius B. It boils at 100 deg Celsius C. It is odorless D. It is clear and colorless E.
It reacts rapidly with potassium metal to form potassium hydroxide.
Answer:
E. It reacts rapidly with potassium metal to form potassium hydroxide
Question:
Which observation illustrates the law of conservation of mass.
Answer:
,Question:
A. The C:O mass ratio of a particular compound is always the same B. The C:O mass ratio of one
compound is exactly double that of another C. Burning 10g of C3H8 produces twice as much CO2 as 5g
C3H8 D. When 3 grams of C reacts with 8 grams of O, 11 grams of product is formed.
Answer:
D. When 3 grams of C reacts with 8 grams of o, 11 g of product is formed Atomic masses in the periodic
table are not integral numbers, for example carbon is listed as 12.011 amu instead of 12. which best
explains why
Question:
A. Atomic masses are measured in real samples, and errors are always presented in lab. B. there is a
theoretical uncertainty in the masses of atoms C. Atoms gain and lose electrons easily, which can change
their mass D. Our technology does not allow for exact measurements of such a small quantity E. Atomic
masses listed are weighted averages of naturally occurring isotopes
Answer:
E. Atomic masses listed are weighted averages of naturally occurring isotopes
Question:
Which element in the 4th period forms a cation
Answer:
Question:
A. Potassium B. Tin C. Bromine D. Carbon E. Krypton
Answer:
A. Potassium (because its farthest to the left)
Question:
Which of the following is the lowest temperature
Answer:
, Question:
A. 43 degrees Celsius B. 12 degrees Celsius C. 57 degrees F D. 87 degrees F E. 318 K F. 290 K
Answer:
B. 12 degrees Celsius Potassium reacts with chlorine to produce the ionic solid potassium chloride (KCl).
Which element would you predict would react with chlorine in a similar type of reaction.
Question:
A. Sodium B. Magnesium C. Calcium D. Need more Infromation
Answer:
A. Sodium
Question:
Which of the following is true
Answer:
Question:
A. All atoms with odd atomic numbers have at least 1 unpaired electron. Atoms with even atomic
numbers have no unpaired electrons. B. All atoms with odd atomic numbers are diamagnetic C. All
atoms with even atomic numbers are diamagnetic D. Both atoms with odd and even atomic numbers can
be paramagnetic
Answer:
D. Both atoms with odd and even atomic numbers can be paramagnetic.
Question:
Which is expected to have the largest surface tension
Answer:
Question:
A. F2 B. C3H8 C. C12H26 D. All equal since they all have the same intermolecular force(s)
Answer:
C. C12H26 (most polarizable and has the greatest london dispersion forces aka has more electrons)
Updated Study Material 2026
Question:
Which statement is true about a nitrogen atom with 9 electrons
Answer:
Question:
A. It has a net charge of -2 B. It has a net charge of +2 C. It has a mass of 7 amu D. It also has 9 neutrons
E. It has 9 protons
Answer:
A. It has a net charge of -2
Question:
which one is not a physical property of water
Answer:
Question:
A. It freezes at 0 deg Celsius B. It boils at 100 deg Celsius C. It is odorless D. It is clear and colorless E.
It reacts rapidly with potassium metal to form potassium hydroxide.
Answer:
E. It reacts rapidly with potassium metal to form potassium hydroxide
Question:
Which observation illustrates the law of conservation of mass.
Answer:
,Question:
A. The C:O mass ratio of a particular compound is always the same B. The C:O mass ratio of one
compound is exactly double that of another C. Burning 10g of C3H8 produces twice as much CO2 as 5g
C3H8 D. When 3 grams of C reacts with 8 grams of O, 11 grams of product is formed.
Answer:
D. When 3 grams of C reacts with 8 grams of o, 11 g of product is formed Atomic masses in the periodic
table are not integral numbers, for example carbon is listed as 12.011 amu instead of 12. which best
explains why
Question:
A. Atomic masses are measured in real samples, and errors are always presented in lab. B. there is a
theoretical uncertainty in the masses of atoms C. Atoms gain and lose electrons easily, which can change
their mass D. Our technology does not allow for exact measurements of such a small quantity E. Atomic
masses listed are weighted averages of naturally occurring isotopes
Answer:
E. Atomic masses listed are weighted averages of naturally occurring isotopes
Question:
Which element in the 4th period forms a cation
Answer:
Question:
A. Potassium B. Tin C. Bromine D. Carbon E. Krypton
Answer:
A. Potassium (because its farthest to the left)
Question:
Which of the following is the lowest temperature
Answer:
, Question:
A. 43 degrees Celsius B. 12 degrees Celsius C. 57 degrees F D. 87 degrees F E. 318 K F. 290 K
Answer:
B. 12 degrees Celsius Potassium reacts with chlorine to produce the ionic solid potassium chloride (KCl).
Which element would you predict would react with chlorine in a similar type of reaction.
Question:
A. Sodium B. Magnesium C. Calcium D. Need more Infromation
Answer:
A. Sodium
Question:
Which of the following is true
Answer:
Question:
A. All atoms with odd atomic numbers have at least 1 unpaired electron. Atoms with even atomic
numbers have no unpaired electrons. B. All atoms with odd atomic numbers are diamagnetic C. All
atoms with even atomic numbers are diamagnetic D. Both atoms with odd and even atomic numbers can
be paramagnetic
Answer:
D. Both atoms with odd and even atomic numbers can be paramagnetic.
Question:
Which is expected to have the largest surface tension
Answer:
Question:
A. F2 B. C3H8 C. C12H26 D. All equal since they all have the same intermolecular force(s)
Answer:
C. C12H26 (most polarizable and has the greatest london dispersion forces aka has more electrons)
