Question 1

Based on the number of electrons in its outer shell or highest energy level,which of these atoms is most stable?

Accepted Answer

A)  hydrogen with atomic number = 1 
B)  carbon with atomic number = 6 
C)  oxygen with atomic number = 8 
D)  neon with atomic number = 10 
E)  magnesium with atomic number = 12 
A)  hydrogen with atomic number = 1 
B)  carbon with atomic number = 6 
C)  oxygen with atomic number = 8 
D)  neon with atomic number = 10 
E)  magnesium with atomic number = 12 D

Question 2

Suspensions

Accepted Answer

A)  are clear 
B)  have a fixed composition 
C)  must be separated by chemical means 
D)  settle when left standing 
E)  are illustrated by a mixture of sugar and water 
A)  are clear 
B)  have a fixed composition 
C)  must be separated by chemical means 
D)  settle when left standing 
E)  are illustrated by a mixture of sugar and water D

Question 3

The chemical symbol for calcium is C.

Accepted Answer

A) True 
 B)False  False

Question 4

A substance formed by the chemical combination of two or more elements in a fixed or definite ratio is a(n)

Accepted Answer

A)  mixture 
B)  solution 
C)  compound 
D)  element 
E)  gas 
A)  mixture 
B)  solution 
C)  compound 
D)  element 
E)  gas

Question 5

The most common members of the lipid class of organic compounds are

Accepted Answer

A)  steroids 
B)  phospholipids 
C)  triglycerides 
D)  glycolipids 
E)  lipoproteins 
A)  steroids 
B)  phospholipids 
C)  triglycerides 
D)  glycolipids 
E)  lipoproteins

Question 6

From the list below,the strongest base has a pH equal to

Accepted Answer

A)  2 
B)  5.5 
C)  7 
D)  8 
E)  9 
A)  2 
B)  5.5 
C)  7 
D)  8 
E)  9

Question 7

A sugar,a phosphate,and a nitrogenous base make up a nucleotide,which is the building block of a nucleic acid.

Accepted Answer

A) True 
 B)False

Question 8

Crushing a substance into a fine powder tends to increase its reaction rate.

Accepted Answer

A) True 
 B)False

Question 9

CO₂ + H₂O ⇔ H⁺ + HCO₃⁻ represents a reversible reaction.If CO₂ is added to the system,then

Accepted Answer

A)  more H+ will be produced 
B)  more water will be produced 
C)  the reaction will proceed to the left 
D)  nothing will happen because the reaction is at equilibrium 
A)  more H+ will be produced 
B)  more water will be produced 
C)  the reaction will proceed to the left 
D)  nothing will happen because the reaction is at equilibrium

Question 10

The molecular formula for sodium bicarbonate is NaHCO₃.Which one of the following statements is INCORRECT?

Accepted Answer

A)  The elements in this compound are sodium, hydrogen, carbon, and oxygen. 
B)  The number of sodium atoms equals the number of carbon atoms. 
C)  The subscript 3 refers to all of the elements preceding it. 
D)  There are three times as many oxygen atoms as hydrogen atoms. 
E)  The number of oxygen atoms equals the number of the other atoms combined. 
A)  The elements in this compound are sodium, hydrogen, carbon, and oxygen. 
B)  The number of sodium atoms equals the number of carbon atoms. 
C)  The subscript 3 refers to all of the elements preceding it. 
D)  There are three times as many oxygen atoms as hydrogen atoms. 
E)  The number of oxygen atoms equals the number of the other atoms combined.

Question 11

The class of organic compounds with building blocks called amino acids is

Accepted Answer

A)  carbohydrates 
B)  lipids 
C)  proteins 
D)  nucleic acids 
E)  high energy compounds 
A)  carbohydrates 
B)  lipids 
C)  proteins 
D)  nucleic acids 
E)  high energy compounds

Question 12

If a base is added to a solution,the pH of the solution decreases.

Accepted Answer

A) True 
 B)False

Question 13

What is the term that describes the chemical bond that is formed when electrons are shared?

Accepted Answer

The answer of What is the term that describes the...

Question 14

The chemical reactions involved in the digestion of food utilize catalysts called enzymes.The enzymes

Accepted Answer

A)  speed up the reactions 
B)  increase the surface area of the reactants 
C)  create hydrolysis reactions 
D)  change the nature of the products 
E)  change a synthesis reaction into a decomposition reaction 
A)  speed up the reactions 
B)  increase the surface area of the reactants 
C)  create hydrolysis reactions 
D)  change the nature of the products 
E)  change a synthesis reaction into a decomposition reaction

Question 15

What is the term that describes the type of reaction in which more energy is stored in the products than in the reactants?

Accepted Answer

The answer of What is the term that describes the...

Question 16

Na is the chemical symbol for

Accepted Answer

A)  sodium 
B)  potassium 
C)  calcium 
D)  iron 
E)  nitrogen 
A)  sodium 
B)  potassium 
C)  calcium 
D)  iron 
E)  nitrogen

Question 17

A reaction in which more energy is stored in the reactants than in the products with a release of energy during the reaction is a(n)_____ reaction.

Accepted Answer

A)  exergonic 
B)  single replacement 
C)  hydrolysis 
D)  endergonic 
E)  dehydration synthesis 
A)  exergonic 
B)  single replacement 
C)  hydrolysis 
D)  endergonic 
E)  dehydration synthesis

Question 18

Glycogen and glucose are examples of carbohydrates.

Accepted Answer

A) True 
 B)False

Question 19

What is the term that describes positively charged ions?

Accepted Answer

The answer of What is the term that describes positively...

Question 20

A chemical bond formed by two atoms sharing electrons is known as a(n)_____ bond.

Accepted Answer

A)  intermolecular 
B)  ionic 
C)  hydrogen 
D)  covalent 
E)  donor 
A)  intermolecular 
B)  ionic 
C)  hydrogen 
D)  covalent 
E)  donor

Based on the number of electrons in its outer shell or highest energy level,which of these atoms is most stable?

Suspensions

The chemical symbol for calcium is C.

A substance formed by the chemical combination of two or more elements in a fixed or definite ratio is a(n)

The most common members of the lipid class of organic compounds are

From the list below,the strongest base has a pH equal to

A sugar,a phosphate,and a nitrogenous base make up a nucleotide,which is the building block of a nucleic acid.

Crushing a substance into a fine powder tends to increase its reaction rate.

CO₂ + H₂O ⇔ H⁺ + HCO₃⁻ represents a reversible reaction.If CO₂ is added to the system,then

The molecular formula for sodium bicarbonate is NaHCO₃.Which one of the following statements is INCORRECT?

The class of organic compounds with building blocks called amino acids is

If a base is added to a solution,the pH of the solution decreases.

What is the term that describes the chemical bond that is formed when electrons are shared?

The chemical reactions involved in the digestion of food utilize catalysts called enzymes.The enzymes

What is the term that describes the type of reaction in which more energy is stored in the products than in the reactants?

Na is the chemical symbol for

A reaction in which more energy is stored in the reactants than in the products with a release of energy during the reaction is a(n)_____ reaction.

Glycogen and glucose are examples of carbohydrates.

What is the term that describes positively charged ions?

A chemical bond formed by two atoms sharing electrons is known as a(n)_____ bond.

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Exam 2: Chemistry, Matter, and Life

Based on the number of electrons in its outer shell or highest energy level,which of these atoms is most stable?

Suspensions

The chemical symbol for calcium is C.

A substance formed by the chemical combination of two or more elements in a fixed or definite ratio is a(n)

The most common members of the lipid class of organic compounds are

From the list below,the strongest base has a pH equal to

A sugar,a phosphate,and a nitrogenous base make up a nucleotide,which is the building block of a nucleic acid.

Crushing a substance into a fine powder tends to increase its reaction rate.

CO₂ + H₂O ⇔ H⁺ + HCO₃⁻ represents a reversible reaction.If CO₂ is added to the system,then

The molecular formula for sodium bicarbonate is NaHCO₃.Which one of the following statements is INCORRECT?

The class of organic compounds with building blocks called amino acids is

If a base is added to a solution,the pH of the solution decreases.

What is the term that describes the chemical bond that is formed when electrons are shared?

The chemical reactions involved in the digestion of food utilize catalysts called enzymes.The enzymes

What is the term that describes the type of reaction in which more energy is stored in the products than in the reactants?

Na is the chemical symbol for

A reaction in which more energy is stored in the reactants than in the products with a release of energy during the reaction is a(n)_____ reaction.

Glycogen and glucose are examples of carbohydrates.

What is the term that describes positively charged ions?

A chemical bond formed by two atoms sharing electrons is known as a(n)_____ bond.

Introduction to the Human Body

Cell Structure and Function

Tissues and Membranes

Integumentary System

Skeletal System

Muscular System

Nervous System

Sensory System

Endocrine System

Cardiovascular System: The Heart

Cardiovascular System: Blood Vessels

Cardiovascular System: Blood

Lymphatic System and Body Defense

Respiratory System

Digestive System

Metabolism and Nutrition

Urinary System and Body Fluids

Reproductive System

Development

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