CHEM 103 EXAM 1 REVIEW - UW
MADISON EXAM WITH CORRECT
QUESTIONS AND ANSWERS 2025
A) What is an acid? - CORRECT-ANSWERSsolution has an excess of H+ ions
B) What is a base? - CORRECT-ANSWERSsolution has an excess of hydroxyl ions
(OH-)
C) What is neutralization? - CORRECT-ANSWERS-process where acid and base
are mixed until they become neutral and the PH is 7.
D) What are the two products of a neutralization chemical reaction? - CORRECT-
ANSWERSwater and salt ( The type of salt depends on acid or base added to
neutralize.)
E) What is a weak acid? - CORRECT-ANSWERSan acid that only partially ionizes
in an aqueous solution. This means that not every molecule breaks apart.
F) pH - CORRECT-ANSWERSis a measurement of how acidic or how basic a
solution is.
G) Why is pH important to biology? - CORRECT-ANSWERSCells survive in a
specific pH range.
H) Human blood is maintain at 7pH for homostasis.
,I) The stomach has acids to break down food.
J) Bile from the liver is a base which breaks down fats & grease.
K) What is a buffer? - CORRECT-ANSWERSa substance to help to
neutralize/balance pH levels.
L) What are pH indicators? - CORRECT-ANSWERSThey are used to tell you the
pH value.
M) Examples are phenalphelein and bromthymol blue.
N) What are the properties of an acid? - CORRECT-ANSWERStaste sour, conduct
electricity, corrosive, reacts with metals, turns litmus paper red.
O) Give examples of acids - CORRECT-ANSWERSHCL which is in your stomack.
P) Sulfuric acid which is used a lot in industries to make fertilzers, paints, etc.
Q) Tums antacid used to neutralize stomach acids.
R) What are some uses of bases? - CORRECT-ANSWERSsoaps and cleaning
products
S) used in batteries
T) What are some examples of bases? - CORRECT-ANSWERSlye used to make
soap.
U) Liquid plummer used for clogged drains. Baking Soda and Baking powder
V) What is the main neutral substance? - CORRECT-ANSWERSwater
,W) How is a salt chemically formed? - CORRECT-ANSWERSWhen you add acid or
base to neutralize a solution the products formed are water and salts.
X) A change in pH units represents a tenfold change in the acidity of the solution
(logarithmic scale). If one solution has a pH of 1 and a second solution has a pH
of 2, the first solution is not twice as acidic a the second it is ______times more
acidic. - CORRECT-ANSWERSten (logarithmic)
Y) What is a pH scale? - CORRECT-ANSWERSa logarithmic scale that indicates
the pH of a solution. It ranges from 0 - 14.
Z) On the pH scale, what numbers represent an acid? - CORRECT-ANSWERS0-6
AA) On the pH scale, what numbers represent a base? - CORRECT-
ANSWERS8-14
BB) On the pH scale, what number represents a neutral solution? -
CORRECT-ANSWERS7
CC) What is a weak acid? - CORRECT-ANSWERSAn acid that only partially
ionizes (breaks down) in a solution. Weak acids are close to 7pH
DD) What is a weak base? - CORRECT-ANSWERSA weak base will only
parttally ionize in a solution. This means that not every molecule breaks apart.
EE) What is a chemical change? - CORRECT-ANSWERSWhen a change in
composition occurs giving new substances with new properties.
, FF) Example when wood changes to carbon. Wood and carbon do not have
similar properties.
GG) WHat is a physical change? - CORRECT-ANSWERSWhen a change
does NOT change the composition.
HH) What are indicators of a chemical change? - CORRECT-
ANSWERSObservations such as what you see( color change, precipitant (solids
in solutions)
II) Hear-boom Smell Taste-sour/sweet Feel-hot or cold.
JJ) Also, bubbles indicate gas..
KK) What is the law of conservation of mass? - CORRECT-ANSWERSMass is
not created nor destroyed.
LL) What is a chemical formula? - CORRECT-ANSWERS-chemical symbols
represent molecules with subscripts to represent the number of that element.
MM) NaCl represents table salt.
NN) Reactants are on the right or left of the -> (yield) sign in a chemical
equation. - CORRECT-ANSWERSleft
OO) Products are on the left or right of the ->(yield) sign in a chemical
equation. - CORRECT-ANSWERSright
MADISON EXAM WITH CORRECT
QUESTIONS AND ANSWERS 2025
A) What is an acid? - CORRECT-ANSWERSsolution has an excess of H+ ions
B) What is a base? - CORRECT-ANSWERSsolution has an excess of hydroxyl ions
(OH-)
C) What is neutralization? - CORRECT-ANSWERS-process where acid and base
are mixed until they become neutral and the PH is 7.
D) What are the two products of a neutralization chemical reaction? - CORRECT-
ANSWERSwater and salt ( The type of salt depends on acid or base added to
neutralize.)
E) What is a weak acid? - CORRECT-ANSWERSan acid that only partially ionizes
in an aqueous solution. This means that not every molecule breaks apart.
F) pH - CORRECT-ANSWERSis a measurement of how acidic or how basic a
solution is.
G) Why is pH important to biology? - CORRECT-ANSWERSCells survive in a
specific pH range.
H) Human blood is maintain at 7pH for homostasis.
,I) The stomach has acids to break down food.
J) Bile from the liver is a base which breaks down fats & grease.
K) What is a buffer? - CORRECT-ANSWERSa substance to help to
neutralize/balance pH levels.
L) What are pH indicators? - CORRECT-ANSWERSThey are used to tell you the
pH value.
M) Examples are phenalphelein and bromthymol blue.
N) What are the properties of an acid? - CORRECT-ANSWERStaste sour, conduct
electricity, corrosive, reacts with metals, turns litmus paper red.
O) Give examples of acids - CORRECT-ANSWERSHCL which is in your stomack.
P) Sulfuric acid which is used a lot in industries to make fertilzers, paints, etc.
Q) Tums antacid used to neutralize stomach acids.
R) What are some uses of bases? - CORRECT-ANSWERSsoaps and cleaning
products
S) used in batteries
T) What are some examples of bases? - CORRECT-ANSWERSlye used to make
soap.
U) Liquid plummer used for clogged drains. Baking Soda and Baking powder
V) What is the main neutral substance? - CORRECT-ANSWERSwater
,W) How is a salt chemically formed? - CORRECT-ANSWERSWhen you add acid or
base to neutralize a solution the products formed are water and salts.
X) A change in pH units represents a tenfold change in the acidity of the solution
(logarithmic scale). If one solution has a pH of 1 and a second solution has a pH
of 2, the first solution is not twice as acidic a the second it is ______times more
acidic. - CORRECT-ANSWERSten (logarithmic)
Y) What is a pH scale? - CORRECT-ANSWERSa logarithmic scale that indicates
the pH of a solution. It ranges from 0 - 14.
Z) On the pH scale, what numbers represent an acid? - CORRECT-ANSWERS0-6
AA) On the pH scale, what numbers represent a base? - CORRECT-
ANSWERS8-14
BB) On the pH scale, what number represents a neutral solution? -
CORRECT-ANSWERS7
CC) What is a weak acid? - CORRECT-ANSWERSAn acid that only partially
ionizes (breaks down) in a solution. Weak acids are close to 7pH
DD) What is a weak base? - CORRECT-ANSWERSA weak base will only
parttally ionize in a solution. This means that not every molecule breaks apart.
EE) What is a chemical change? - CORRECT-ANSWERSWhen a change in
composition occurs giving new substances with new properties.
, FF) Example when wood changes to carbon. Wood and carbon do not have
similar properties.
GG) WHat is a physical change? - CORRECT-ANSWERSWhen a change
does NOT change the composition.
HH) What are indicators of a chemical change? - CORRECT-
ANSWERSObservations such as what you see( color change, precipitant (solids
in solutions)
II) Hear-boom Smell Taste-sour/sweet Feel-hot or cold.
JJ) Also, bubbles indicate gas..
KK) What is the law of conservation of mass? - CORRECT-ANSWERSMass is
not created nor destroyed.
LL) What is a chemical formula? - CORRECT-ANSWERS-chemical symbols
represent molecules with subscripts to represent the number of that element.
MM) NaCl represents table salt.
NN) Reactants are on the right or left of the -> (yield) sign in a chemical
equation. - CORRECT-ANSWERSleft
OO) Products are on the left or right of the ->(yield) sign in a chemical
equation. - CORRECT-ANSWERSright
