Question 1

Which of the following statements is false?

Accepted Answer

A)   Chemical reactions progress at a faster rate when the reacting particles are present in higher numbers.
B)   Chemical reactions proceed more quickly at higher temperatures.
C)   Larger particles move faster than smaller ones and thus collide more frequently and more forcefully.
D)   Catalysts increase the rate of chemical reactions, sometimes while undergoing reversible changes in shape.E) C) and D)
F) B) and D)

Question 2

An atom with an atomic number of 10 and a mass number of 24 would have________.

Accepted Answer

A)   14 neutrons
B)   10 neutrons
C)   14 electrons
D)   24 protonsE) None of the above
F) B) and C)

Question 3

Choose the answer that best describes fibrous proteins.

Accepted Answer

A)   are usually called enzymes
B)   are cellular catalysts
C)   rarely exhibit secondary structure
D)   are very stable and insoluble in waterE) A) and D)
F) C) and D)

Question 4

The four elements that make up about 96% of body weight are ________.

Accepted Answer

A)   nitrogen, hydrogen, calcium, sodium
B)   sodium, potassium, hydrogen, oxygen
C)   carbon, oxygen, hydrogen, nitrogen
D)   carbon, oxygen, phosphorus, calciumE) A) and D)
F) B) and D)

Question 5

Mixtures are combinations of elements or compounds that are physically blended together but are not bound by chemical bonds.

Accepted Answer

A) True 
 B)False

Question 6

A chemical reaction in which bonds are broken is usually associated with ________.

Accepted Answer

A)   the consumption of energy
B)   forming a larger molecule
C)   a synthesis
D)   the release of energyE) A) and B)
F) A) and C)

Question 7

What is the major difference between polar and nonpolar covalent bonds?

Accepted Answer

Polar bonds have an unequal sharing of e...

Question 8

If all protons, electrons, and neutrons are alike, regardless of the atom considered, what determines the unique properties of each element?

Accepted Answer

Atoms of different e...

Question 9

Glucose is an example of a monosaccharide.

Accepted Answer

A) True 
 B)False

Question 10

A chemical bond is an energy relationship between outer electrons and neighboring atoms.

Accepted Answer

A) True 
 B)False

Question 11

The lower the pH, the higher the hydrogen ion concentration.

Accepted Answer

A) True 
 B)False

Question 12

A 23-year-old male was riding his road bike in 100-degree heat, when he suddenly became nauseated and weak. He called 911 from his cell phone. When the ambulance came, the paramedics started intravenoustherapy for severe dehydration. Explain the critical role of water to maintain homeostasis.

Accepted Answer

Water is the most abundant and important...

Question 13

Mrs. Mulligan goes to her dentist and, after having a couple of cavities filled, her dentist strongly suggests that she reduce her intake of sodas and increase her intake of calcium phosphates in the foods she eats. Why?

Accepted Answer

Sodas are strong acids that ca...

Question 14

Explain the difference between potential and kinetic energy.

Accepted Answer

Potential energy is inactive s...

Question 15

Forming glycogen as energy storage in the liver is an example of ________.

Accepted Answer

A)   exergonic
B)   anabolism
C)   oxidation
D)   catabolismE) A) and D)
F) B) and D)

Question 16

Chemical properties are determined primarily by neutrons.

Accepted Answer

A) True 
 B)False

Question 17

How many phosphates would AMP have attached to it?

Accepted Answer

A)   two
B)   none
C)   one
D)   threeE) B) and D)
F) All of the above

Question 18

Triglycerides are a poor source of stored energy.

Accepted Answer

A) True 
 B)False

Question 19

Carbohydrates are stored in the liver and skeletal muscles in the form of ________.

Accepted Answer

A)   cholesterol
B)   glycogen
C)   glucose
D)   triglyceridesE) B) and C)
F) A) and D)

Question 20

________ is fat soluble, produced in the skin on exposure to UV radiation, and necessary for normal bone growth and function.

Accepted Answer

A)   Vitamin K
B)   Cortisol
C)   Vitamin D
D)   Vitamin AE) A) and B)
F) None of the above

Exam 2: Chemistry Comes Alive

Forming glycogen as energy storage in the liver is an example of ________.

Correct AnswerverifiedShow Answer

Mixtures are combinations of elements or compounds that are physically blended together but are not bound by chemical bonds.

Correct AnswerverifiedShow Answer

A chemical bond is an energy relationship between outer electrons and neighboring atoms.

Correct AnswerverifiedShow Answer

Triglycerides are a poor source of stored energy.

Correct AnswerverifiedShow Answer

Mrs. Mulligan goes to her dentist and, after having a couple of cavities filled, her dentist strongly suggests that she reduce her intake of sodas and increase her intake of calcium phosphates in the foods she eats. Why?

Correct AnswerverifiedSodas are strong acids that ca...View AnswerShow Answer

What is the major difference between polar and nonpolar covalent bonds?

Correct AnswerverifiedPolar bonds have an unequal sharing of e...View AnswerShow Answer

Glucose is an example of a monosaccharide.

Correct AnswerverifiedShow Answer

Carbohydrates are stored in the liver and skeletal muscles in the form of ________.

Correct AnswerverifiedShow Answer

How many phosphates would AMP have attached to it?

Correct AnswerverifiedShow Answer

A chemical reaction in which bonds are broken is usually associated with ________.

Correct AnswerverifiedShow Answer

A 23-year-old male was riding his road bike in 100-degree heat, when he suddenly became nauseated and weak. He called 911 from his cell phone. When the ambulance came, the paramedics started intravenoustherapy for severe dehydration. Explain the critical role of water to maintain homeostasis.

Correct AnswerverifiedWater is the most abundant and important...View AnswerShow Answer

If all protons, electrons, and neutrons are alike, regardless of the atom considered, what determines the unique properties of each element?

Correct AnswerverifiedAtoms of different e...View AnswerShow Answer

Chemical properties are determined primarily by neutrons.

Correct AnswerverifiedShow Answer

Explain the difference between potential and kinetic energy.

Correct AnswerverifiedPotential energy is inactive s...View AnswerShow Answer

________ is fat soluble, produced in the skin on exposure to UV radiation, and necessary for normal bone growth and function.

Correct AnswerverifiedShow Answer

An atom with an atomic number of 10 and a mass number of 24 would have________.

Correct AnswerverifiedShow Answer

Choose the answer that best describes fibrous proteins.

Correct AnswerverifiedShow Answer

Which of the following statements is false?

Correct AnswerverifiedShow Answer

The lower the pH, the higher the hydrogen ion concentration.

Correct AnswerverifiedShow Answer

The four elements that make up about 96% of body weight are ________.

Correct AnswerverifiedShow Answer

Correct Answer
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Sodas are strong acids that ca...
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Polar bonds have an unequal sharing of e...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Water is the most abundant and important...
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Atoms of different e...
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Correct Answer
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Correct Answer
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Potential energy is inactive s...
View Answer

Correct Answer
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Correct Answer
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