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
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
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
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
atoms with charge formed by loss or gain of an electron
Correct Answer: ions
positive ion, may have roman numeral
Correct Answer: Cation
negative ion, element ends in -ide
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
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
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
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
atoms with charge formed by loss or gain of an electron
Correct Answer: ions
positive ion, may have roman numeral
Correct Answer: Cation
negative ion, element ends in -ide
