CHEM 101 FULL COURSE
ACTUAL EXAM QUESTIONS
WITH COMPLETE VERIFIED
ANSWERS GUARANTEED PASS
"Chemistry in Health and Medicine - CORRECT ANSWER=> Sanitation systems
gene therapy
Vaccines and antibiotics
anesthesia in surgery"
"chemistry in energy and environment - CORRECT ANSWER=> fossil fuel
solar energy
nuclear energy"
"Chemistry in Materials and Technology - CORRECT ANSWER=> polymers, ceramics, and liquid
crystals
room temperature super conductors
molecular computing"
"chemistry in food and agriculture - CORRECT ANSWER=> genetically modified crops
natural pesticides
specialized fertilizers"
"the scientific method is - CORRECT ANSWER=> a systematic approach to research"
"Scientific Method Steps - CORRECT ANSWER=> observation, representation, interpretation"
"a hypothesis is - CORRECT ANSWER=> a tentative explanation for a set of observations"
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,"a law - CORRECT ANSWER=> a concise statement of a relationship between phenomena that is
always the same under the same conditions"
"a theory is - CORRECT ANSWER=> a unifying principle that explains a body of facts and/or those
laws that are based on them"
"Scientific Notation Rules - CORRECT ANSWER=> Decimal must be after first non-zero integer
Positive exponent means move decimal right
Negative exponent means move decimal left
Multiplication/Division: add/subtract exponents
Addition/Subtraction: exponents must match before calculating"
"Scientific figure rules - CORRECT ANSWER=> All nonzero numbers are significant
all zeros between nonzero numbers are significant
all zeros to the right of the decimal point and at the end of the number are significant
all zero before the nonzero digits are not significant"
"Scientific Figures operations - CORRECT ANSWER=> addition and subtraction : the number with
the least numbers after the decimal
multiplication and division : the number with the least sigfigs"
"exact numbers - CORRECT ANSWER=> have an infinite number of significant figures"
"physical means of separation - CORRECT ANSWER=> centrifuge, filter(solid+liquid),
distillation(liquid+liquid), magnets"
"water density - CORRECT ANSWER=> 1 g/cm3"
"Dalton's Atomic Theory - CORRECT ANSWER=> 1) elements are composed of atoms. 2) atoms of
same element are identical in size, mass, and chemical properties , but differ from other
elements. 3) Compound - composed of atoms of more
thang in any compound The ratio of - One
element The numbers of atoms 5)chemical reaction involves only
separation, Combination, rearrangement
of atoms"
"Law of Conservation of Mass - CORRECT ANSWER=> When mass is conserved in physical or
chemical reaction, mass can neither be destroyed of created."
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,"Law of Multiple Proportions - CORRECT ANSWER=> whenever two elements form more than one
compound, the different masses of one element that combine with the same mass of the other
element are in the ratio of small whole numbers"
"Thomson's Discovery - CORRECT ANSWER=> 1)discovered the electrons 2)measured the charge
e/mass e= 1.76*10^8"
"Milikan's discovery (oil experiment) - CORRECT ANSWER=> 1)charge of electron=1.60x10^-19
2)mass of electron=9.10x10^-28"
"types of radioactivity - CORRECT ANSWER=> alpha particles(+), beta particles(-), gamma rays(no
charge but has the highest energy)"
"Thomson's Atomic Theory - CORRECT ANSWER=> believed the atom to be a uniform sphere with
solid positive charge with electrons embedded."
"Rutherford - CORRECT ANSWER=> discovered the nucleus
atom ( +) charge is concentrated in the nucleus
Proton (P) has (+) ,( è) has (- )charge
Mass P is 1840 x mass è=1.67x10^-24
Size of nuclear Smaller than Size of atom
mass of nuclear bigger than massof
[large]atom"
"Chadwick - CORRECT ANSWER=> Discovered the neutron and the charge =0
alpha + Be9 --> 1n + 12C"
"particles in atoms - CORRECT ANSWER=> proton (p) + inside the nucleus , neutron (n) 0 inside
the nucleus , electron (e) - charge floating around the nucleus"
"The mass of protons and neutrons are - CORRECT ANSWER=> equal and = 1840xmass e"
"atomic number(Z) - CORRECT ANSWER=> the number of protons in the nucleus of an atom"
"mass number A - CORRECT ANSWER=> the sum of the number of neutrons and protons in an
atomic nucleus"
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, "number of nuetrons - CORRECT ANSWER=> mass number - atomic number"
"number of electrons in a neutral atom - CORRECT ANSWER=> same as the number of protons"
"Number of electrons in a ion - CORRECT ANSWER=> (+) -> protons - charge number
(-) -> protons + charge number"
"element symbol - CORRECT ANSWER=> "
"Mass number is greater than - CORRECT ANSWER=> Atomic number"
"Isotopes - CORRECT ANSWER=> Atoms of the same element with the same number of protons
but different numbers of neutrons"
"Elements are arranged in the periodic table according to their - CORRECT ANSWER=> Increasing
atomic number Z"
"periods on periodic table - CORRECT ANSWER=> horizontal rows (7 periods)"
"groups on periodic table - CORRECT ANSWER=> the vertical row of elements in the periodic table
(also called family), elements in group share chemical properties 18 groups or 1A-8A and 1B-8B"
"Types of elements on periodic table - CORRECT ANSWER=> Representative element : Assigned as
1A to 7A .
Transition element : Assigned as 1b to 8B
Inner Transition element : tow rows down periodic table.
lanthindes and actinides"
"Group 1 name 1A - CORRECT ANSWER=> alkali metals"
"Group 2 name 2A - CORRECT ANSWER=> alkaline earth metals"
"group 16 name 6A - CORRECT ANSWER=> Chalcogens"
"Group 17 name 7A - CORRECT ANSWER=> Halogens"
"Group 18 name 8A - CORRECT ANSWER=> noble gases"
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ACTUAL EXAM QUESTIONS
WITH COMPLETE VERIFIED
ANSWERS GUARANTEED PASS
"Chemistry in Health and Medicine - CORRECT ANSWER=> Sanitation systems
gene therapy
Vaccines and antibiotics
anesthesia in surgery"
"chemistry in energy and environment - CORRECT ANSWER=> fossil fuel
solar energy
nuclear energy"
"Chemistry in Materials and Technology - CORRECT ANSWER=> polymers, ceramics, and liquid
crystals
room temperature super conductors
molecular computing"
"chemistry in food and agriculture - CORRECT ANSWER=> genetically modified crops
natural pesticides
specialized fertilizers"
"the scientific method is - CORRECT ANSWER=> a systematic approach to research"
"Scientific Method Steps - CORRECT ANSWER=> observation, representation, interpretation"
"a hypothesis is - CORRECT ANSWER=> a tentative explanation for a set of observations"
1|Page
,"a law - CORRECT ANSWER=> a concise statement of a relationship between phenomena that is
always the same under the same conditions"
"a theory is - CORRECT ANSWER=> a unifying principle that explains a body of facts and/or those
laws that are based on them"
"Scientific Notation Rules - CORRECT ANSWER=> Decimal must be after first non-zero integer
Positive exponent means move decimal right
Negative exponent means move decimal left
Multiplication/Division: add/subtract exponents
Addition/Subtraction: exponents must match before calculating"
"Scientific figure rules - CORRECT ANSWER=> All nonzero numbers are significant
all zeros between nonzero numbers are significant
all zeros to the right of the decimal point and at the end of the number are significant
all zero before the nonzero digits are not significant"
"Scientific Figures operations - CORRECT ANSWER=> addition and subtraction : the number with
the least numbers after the decimal
multiplication and division : the number with the least sigfigs"
"exact numbers - CORRECT ANSWER=> have an infinite number of significant figures"
"physical means of separation - CORRECT ANSWER=> centrifuge, filter(solid+liquid),
distillation(liquid+liquid), magnets"
"water density - CORRECT ANSWER=> 1 g/cm3"
"Dalton's Atomic Theory - CORRECT ANSWER=> 1) elements are composed of atoms. 2) atoms of
same element are identical in size, mass, and chemical properties , but differ from other
elements. 3) Compound - composed of atoms of more
thang in any compound The ratio of - One
element The numbers of atoms 5)chemical reaction involves only
separation, Combination, rearrangement
of atoms"
"Law of Conservation of Mass - CORRECT ANSWER=> When mass is conserved in physical or
chemical reaction, mass can neither be destroyed of created."
2|Page
,"Law of Multiple Proportions - CORRECT ANSWER=> whenever two elements form more than one
compound, the different masses of one element that combine with the same mass of the other
element are in the ratio of small whole numbers"
"Thomson's Discovery - CORRECT ANSWER=> 1)discovered the electrons 2)measured the charge
e/mass e= 1.76*10^8"
"Milikan's discovery (oil experiment) - CORRECT ANSWER=> 1)charge of electron=1.60x10^-19
2)mass of electron=9.10x10^-28"
"types of radioactivity - CORRECT ANSWER=> alpha particles(+), beta particles(-), gamma rays(no
charge but has the highest energy)"
"Thomson's Atomic Theory - CORRECT ANSWER=> believed the atom to be a uniform sphere with
solid positive charge with electrons embedded."
"Rutherford - CORRECT ANSWER=> discovered the nucleus
atom ( +) charge is concentrated in the nucleus
Proton (P) has (+) ,( è) has (- )charge
Mass P is 1840 x mass è=1.67x10^-24
Size of nuclear Smaller than Size of atom
mass of nuclear bigger than massof
[large]atom"
"Chadwick - CORRECT ANSWER=> Discovered the neutron and the charge =0
alpha + Be9 --> 1n + 12C"
"particles in atoms - CORRECT ANSWER=> proton (p) + inside the nucleus , neutron (n) 0 inside
the nucleus , electron (e) - charge floating around the nucleus"
"The mass of protons and neutrons are - CORRECT ANSWER=> equal and = 1840xmass e"
"atomic number(Z) - CORRECT ANSWER=> the number of protons in the nucleus of an atom"
"mass number A - CORRECT ANSWER=> the sum of the number of neutrons and protons in an
atomic nucleus"
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, "number of nuetrons - CORRECT ANSWER=> mass number - atomic number"
"number of electrons in a neutral atom - CORRECT ANSWER=> same as the number of protons"
"Number of electrons in a ion - CORRECT ANSWER=> (+) -> protons - charge number
(-) -> protons + charge number"
"element symbol - CORRECT ANSWER=> "
"Mass number is greater than - CORRECT ANSWER=> Atomic number"
"Isotopes - CORRECT ANSWER=> Atoms of the same element with the same number of protons
but different numbers of neutrons"
"Elements are arranged in the periodic table according to their - CORRECT ANSWER=> Increasing
atomic number Z"
"periods on periodic table - CORRECT ANSWER=> horizontal rows (7 periods)"
"groups on periodic table - CORRECT ANSWER=> the vertical row of elements in the periodic table
(also called family), elements in group share chemical properties 18 groups or 1A-8A and 1B-8B"
"Types of elements on periodic table - CORRECT ANSWER=> Representative element : Assigned as
1A to 7A .
Transition element : Assigned as 1b to 8B
Inner Transition element : tow rows down periodic table.
lanthindes and actinides"
"Group 1 name 1A - CORRECT ANSWER=> alkali metals"
"Group 2 name 2A - CORRECT ANSWER=> alkaline earth metals"
"group 16 name 6A - CORRECT ANSWER=> Chalcogens"
"Group 17 name 7A - CORRECT ANSWER=> Halogens"
"Group 18 name 8A - CORRECT ANSWER=> noble gases"
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