STRAIGHTERLINE CHEM101 FINAL EXAM QUESTIONS &
ANSWERS (VERIFIED) | LATEST UPDATE 2026/2027 | RATED
A+ | 100% PASS!!
What is the reducing agent in the following equation?
Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g)
Correct Answer: Mg
What element has been oxidized and what element has been reduced?
3CuS + 8HNO3 --> 3CuSO4 + 8NO + 4H2O
Correct Answer: S = oxidized
N = reduced
Which arrangement accurately describes the standard entropy values at different
phases?
Correct Answer: (s) < (l) < (g)
Total number of neutrons and protons in an atom; # protons + # electrons
,Correct Answer: Mass Number
Most nonmetallic elements are found in which block of the periodic table?
Correct Answer: p
Plants use up copious amounts of which alkali metal, preventing most of it from
being washed out to sea?
Correct Answer: Potassium
What is the ratio of reactants and products in the chemical equation?
__NaOH + __H2SO4 --> __Na2SO4 + __H2O
Correct Answer: 2:1:1:2
What is Avogadro's number?
Correct Answer: the number of ATOMS in 12g of Carbon-12
1 g = 6.022 × 1023 amu
,Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by
showing that...
Correct Answer: Positive matter is concentrated in the central core
What are the most stable isotopes?
Correct Answer: 2, 8, 20, 50, 82 or 126 protons
measure of the amount of matter
Correct Answer: Mass
made from atoms of 2+ elements that are chemically bonded; cannot be separated
into simpler substances by any physical process; can be separated by a chemical
reaction Correct Answer: Compound
Definite shape and volume
Doesn't conform to shape of container
Particles are very close together in orderly fashion with little freedom of motion
Correct Answer: Solid
, Definite volume, indefinite shape
Conforms to shape of the part of the container it fills
Particles are close together but not rigidly in position with freedom to move past
each other
Correct Answer: Liquid
No definite shape or volume
Conforms to shape and volume of container
Particles separated by distances very large compared to size of particles
Correct Answer: Gas
How do you convert from moles to grams?
Correct Answer: multiply the atomic mass (grams) by the number of moles
How do you convert from grams to moles?
Correct Answer: Divide the total number of grams by the atomic mass (grams) of
1 mole
Color, melting point, boiling point
ANSWERS (VERIFIED) | LATEST UPDATE 2026/2027 | RATED
A+ | 100% PASS!!
What is the reducing agent in the following equation?
Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g)
Correct Answer: Mg
What element has been oxidized and what element has been reduced?
3CuS + 8HNO3 --> 3CuSO4 + 8NO + 4H2O
Correct Answer: S = oxidized
N = reduced
Which arrangement accurately describes the standard entropy values at different
phases?
Correct Answer: (s) < (l) < (g)
Total number of neutrons and protons in an atom; # protons + # electrons
,Correct Answer: Mass Number
Most nonmetallic elements are found in which block of the periodic table?
Correct Answer: p
Plants use up copious amounts of which alkali metal, preventing most of it from
being washed out to sea?
Correct Answer: Potassium
What is the ratio of reactants and products in the chemical equation?
__NaOH + __H2SO4 --> __Na2SO4 + __H2O
Correct Answer: 2:1:1:2
What is Avogadro's number?
Correct Answer: the number of ATOMS in 12g of Carbon-12
1 g = 6.022 × 1023 amu
,Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by
showing that...
Correct Answer: Positive matter is concentrated in the central core
What are the most stable isotopes?
Correct Answer: 2, 8, 20, 50, 82 or 126 protons
measure of the amount of matter
Correct Answer: Mass
made from atoms of 2+ elements that are chemically bonded; cannot be separated
into simpler substances by any physical process; can be separated by a chemical
reaction Correct Answer: Compound
Definite shape and volume
Doesn't conform to shape of container
Particles are very close together in orderly fashion with little freedom of motion
Correct Answer: Solid
, Definite volume, indefinite shape
Conforms to shape of the part of the container it fills
Particles are close together but not rigidly in position with freedom to move past
each other
Correct Answer: Liquid
No definite shape or volume
Conforms to shape and volume of container
Particles separated by distances very large compared to size of particles
Correct Answer: Gas
How do you convert from moles to grams?
Correct Answer: multiply the atomic mass (grams) by the number of moles
How do you convert from grams to moles?
Correct Answer: Divide the total number of grams by the atomic mass (grams) of
1 mole
Color, melting point, boiling point
