chem 210 final exam questions and answers
2025\2026 A+ Grade
T/F nitrogen is called the superglue of the chemical world
- correct answer false
T/F large elements, such as strontium, are common in biomolecules
- correct answer false
T/F the time it takes for a compound to flow through a metabolic pathway is called the payoff phase
- correct answer false
T/F proteins, carbohydrates, and fats all get broken down into acetyl-CoA
- correct answer true
T/F a fat is a lipid molecule that is a solid at room temperature
- correct answer true
in DNA, guanine always pairs with ____
A. thymine
B. guanine
C. uracil
D. cytosine
E. both A and B
- correct answer D. cytosine
water is considered a polar solvent due to attractive forces known as hydrogen bonds. a hydrogen bond
is _____
, A. a bond that is stronger than a covalent bond
B. an attractive force between molecules where partially positive hydrogen atoms are attracted to
partially negative atoms of F, O, or N
C. the polar O-H bond in water
D. an ionic bond between H and another atom
E. a covalent bond between H and O
- correct answer B. an attractive force between molecules where partially positive hydrogen atoms are
attracted to partially negative atoms of F, O, or N
what is a unique molecule. which of the following contributes to water's unique place in the chemical
world?
A. the geometry of the molecule
B. the polarity of the O-H bonds
C. the ability of water molecules to hydrogen bond
D. the bond angle of water
E. all of the answers are correct
- correct answer E. all of the answers are correct
the H+ concentration of a solution is 7.9x10^-13M. what is the pH?
A. -6.70
B. 6.70
C. 11.17
D. -12.1
E. 12.1
- correct answer E. 12.1
which of the following is the enthalpy change of a reaction?
A. delta G
B. delta S
C. delta H
D. delta F
2025\2026 A+ Grade
T/F nitrogen is called the superglue of the chemical world
- correct answer false
T/F large elements, such as strontium, are common in biomolecules
- correct answer false
T/F the time it takes for a compound to flow through a metabolic pathway is called the payoff phase
- correct answer false
T/F proteins, carbohydrates, and fats all get broken down into acetyl-CoA
- correct answer true
T/F a fat is a lipid molecule that is a solid at room temperature
- correct answer true
in DNA, guanine always pairs with ____
A. thymine
B. guanine
C. uracil
D. cytosine
E. both A and B
- correct answer D. cytosine
water is considered a polar solvent due to attractive forces known as hydrogen bonds. a hydrogen bond
is _____
, A. a bond that is stronger than a covalent bond
B. an attractive force between molecules where partially positive hydrogen atoms are attracted to
partially negative atoms of F, O, or N
C. the polar O-H bond in water
D. an ionic bond between H and another atom
E. a covalent bond between H and O
- correct answer B. an attractive force between molecules where partially positive hydrogen atoms are
attracted to partially negative atoms of F, O, or N
what is a unique molecule. which of the following contributes to water's unique place in the chemical
world?
A. the geometry of the molecule
B. the polarity of the O-H bonds
C. the ability of water molecules to hydrogen bond
D. the bond angle of water
E. all of the answers are correct
- correct answer E. all of the answers are correct
the H+ concentration of a solution is 7.9x10^-13M. what is the pH?
A. -6.70
B. 6.70
C. 11.17
D. -12.1
E. 12.1
- correct answer E. 12.1
which of the following is the enthalpy change of a reaction?
A. delta G
B. delta S
C. delta H
D. delta F
