Question 1

Match the following particles to the correct description:
A) Neutron
B) Atom
C) Cation
D) Molecule
-Electrically charged particle due to loss of an electron.

Accepted Answer

The answer of Match the following particles to the correct...

Question 2

About 60% to 80% of the volume of most living cells consists of organic compounds.

Accepted Answer

A) True 
 B)False

Question 3

A)

B)

C)

D)

E)

Figure 2.1
Using Figure 2.1, match the following:
-Nucleotide

Accepted Answer

The answer of A)

B)

C)

D)

E)

Figure 2.1
Using Figure 2.1, match the...

Question 4

In the compound H₂CO₃, what do the numbers 2 and 3 represent?

Accepted Answer

The 2 indicates that there are...

Question 5

An amino acid may act as a proton acceptor or donor. Explain.

Accepted Answer

Amino acids have two component...

Question 6

The chemical symbol OO means ________.

Accepted Answer

A)   zero equals zero
B)   both atoms are bonded and have zero electrons in the outer orbit
C)   the atoms are double bonded
D)   this is an ionic bond with two shared electronsE) A) and D)
F) B) and C)

Question 7

An atom with three electrons would have a valence of ________.

Accepted Answer

The answer of An atom with three electrons would have...

Question 8

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

Accepted Answer

A)   glucose
B)   triglycerides
C)   glycogen
D)   cholesterolE) A) and C)
F) C) and D)

Question 9

Chemical properties are determined primarily by neutrons.

Accepted Answer

A) True 
 B)False

Question 10

The atomic weight is only an average of relative weights of an atom and its isotopes, and it may vary from the weight of a specific isotope.

Accepted Answer

A) True 
 B)False

Question 11

Although his cholesterol levels were not high, Mr. Martinez read that cholesterol was bad for his health, so he eliminated all foods and food products containing this molecule. He later found that his cholesterol level dropped only 20%. Why did it not drop more?

Accepted Answer

Cholesterol is produ...

Question 12

Stress proteins are a type of protein called ________.

Accepted Answer

A)   coenzymes
B)   cofactors
C)   eicosanoids
D)   chaperonesE) A) and D)
F) A) and C)

Question 13

A 65-year-old patient came to the emergency room with complaints of severe heartburn unrelieved by taking a "large handful" of antacids. Would you expect the pH to be high or low? Explain why.

Accepted Answer

You would expect a high pH. Taking antac...

Question 14

Which of the following is the major positive ion outside cells?

Accepted Answer

A)   magnesium
B)   hydrogen
C)   potassium
D)   sodiumE) A) and B)
F) B) and C)

Question 15

Which of the following would be regarded as an organic molecule?

Accepted Answer

A)   H₂O
B)   NaCl
C)   NaOH
D)   CH₄E) None of the above
F) A) and D)

Question 16

What is the ratio of fatty acids to glycerol in neutral fats?

Accepted Answer

A)   1:1
B)   2:1
C)   3:1
D)   4:1E) None of the above
F) A) and B)

Question 17

Match the following:
A) Mass number of an element
B) Atomic symbol
C) Atomic number
-First one or two letters of an element's name

Accepted Answer

The answer of Match the following:
A) Mass number of an...

Question 18

Are all chemical reactions reversible? If not, why aren't they all reversible?

Accepted Answer

All chemical reactio...

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is a neutralization reaction?

Accepted Answer

A)   HCl → H⁺ + Cl⁻
B)   NaOH → Na⁺ + OH⁻
C)   NH₃ + H⁺ → NH₄⁺²
D)   HCl + NaOH → NaCl + H₂OE) C) and D)
F) B) and C)

Exam 2: Chemistry Comes Alive

Are all chemical reactions reversible? If not, why aren't they all reversible?

Correct AnswerverifiedAll chemical reactio...View AnswerShow Answer

Which of the following would be regarded as an organic molecule?

Correct AnswerverifiedShow Answer

What is the ratio of fatty acids to glycerol in neutral fats?

Correct AnswerverifiedShow Answer

The atomic weight is only an average of relative weights of an atom and its isotopes, and it may vary from the weight of a specific isotope.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is the major positive ion outside cells?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Match the following particles to the correct description: A) Neutron B) Atom C) Cation D) Molecule -Electrically charged particle due to loss of an electron.

Correct AnswerverifiedShow Answer

A 65-year-old patient came to the emergency room with complaints of severe heartburn unrelieved by taking a "large handful" of antacids. Would you expect the pH to be high or low? Explain why.

Correct AnswerverifiedYou would expect a high pH. Taking antac...View AnswerShow Answer

Chemical properties are determined primarily by neutrons.

Correct AnswerverifiedShow Answer

An atom with three electrons would have a valence of ________.

Correct AnswerverifiedShow Answer

About 60% to 80% of the volume of most living cells consists of organic compounds.

Correct AnswerverifiedShow Answer

Which of the following is a neutralization reaction?

Correct AnswerverifiedShow Answer

The chemical symbol OO means ________.

Correct AnswerverifiedShow Answer

Match the following: A) Mass number of an element B) Atomic symbol C) Atomic number -First one or two letters of an element's name

Correct AnswerverifiedShow Answer

A) B) C) D) E) Figure 2.1 Using Figure 2.1, match the following: -Nucleotide

Correct AnswerverifiedShow Answer

Stress proteins are a type of protein called ________.

Correct AnswerverifiedShow Answer

Although his cholesterol levels were not high, Mr. Martinez read that cholesterol was bad for his health, so he eliminated all foods and food products containing this molecule. He later found that his cholesterol level dropped only 20%. Why did it not drop more?

Correct AnswerverifiedCholesterol is produ...View AnswerShow Answer

An amino acid may act as a proton acceptor or donor. Explain.

Correct AnswerverifiedAmino acids have two component...View AnswerShow Answer

In the compound H₂CO₃, what do the numbers 2 and 3 represent?

Correct AnswerverifiedThe 2 indicates that there are...View AnswerShow Answer

Correct Answer
verified
All chemical reactio...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
You would expect a high pH. Taking antac...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Cholesterol is produ...
View Answer

Correct Answer
verified
Amino acids have two component...
View Answer

Correct Answer
verified
The 2 indicates that there are...
View Answer