Question 1

Blood is called a colloidal suspension because

Accepted Answer

A)  it has a pH of 7.4. 
B)  it is alkaline. 
C)  it consists of the suspended plasma proteins. 
D)  it consists of the sodium and chloride ions. 
A)  it has a pH of 7.4. 
B)  it is alkaline. 
C)  it consists of the suspended plasma proteins. 
D)  it consists of the sodium and chloride ions.

Question 2

The word ferrous refers to

Accepted Answer

A)  an acid solution. 
B)  an alkaline solution. 
C)  any cation. 
D)  iron. 
A)  an acid solution. 
B)  an alkaline solution. 
C)  any cation. 
D)  iron.

Question 3

A molecule of water has a (+)charge at one and a (-)charge at the other end of the molecule.What is the best description?

Accepted Answer

A)  Radioactive 
B)  Tincture 
C)  Polar molecule 
D)  Ionization 
A)  Radioactive 
B)  Tincture 
C)  Polar molecule 
D)  Ionization

Question 4

NaCl,table salt,is called a(n)

Accepted Answer

A)  anion. 
B)  electrolyte. 
C)  cation. 
D)  ion. 
A)  anion. 
B)  electrolyte. 
C)  cation. 
D)  ion.

Question 5

Which of the following acts as a catalyst?

Accepted Answer

A)  An acid 
B)  An enzyme 
C)  A buffer 
D)  ATP 
A)  An acid 
B)  An enzyme 
C)  A buffer 
D)  ATP

Question 6

What happens when HCl is added to a solution with a pH of 7.45?

Accepted Answer

A)  The pH will be higher than 7.45. 
B)  The solution will become more alkaline. 
C)  The [H+] of the solution will increase. 
D)  The pH will be higher than 8.0. 
A)  The pH will be higher than 7.45. 
B)  The solution will become more alkaline. 
C)  The [H+] of the solution will increase. 
D)  The pH will be higher than 8.0.

Question 7

Which of the following is described by this statement? One atom of oxygen bonds covalently with two atoms of hydrogen.

Accepted Answer

A)  Carbon dioxide 
B)  A tincture 
C)  Water 
D)  Neutralization of an acid with a base 
A)  Carbon dioxide 
B)  A tincture 
C)  Water 
D)  Neutralization of an acid with a base

Question 8

Which of the following is a measurement of hydrogen ion concentration [H⁺]?

Accepted Answer

A)  Atomic number 
B)  Atomic mass 
C)  Isotope 
D)  pH 
A)  Atomic number 
B)  Atomic mass 
C)  Isotope 
D)  pH

Question 9

A combination of sugar granules and iron filings is best described as a(n):

Accepted Answer

A)  mixture. 
B)  colloidal suspension. 
C)  tincture. 
D)  isotope. 
A)  mixture. 
B)  colloidal suspension. 
C)  tincture. 
D)  isotope.

Question 10

Which of the following is descriptive of the chemical reaction in the previous question?

Accepted Answer

A)  Cation + anion → electrolyte 
B)  Electrolyte → cation + anion 
C)  Electrolyte + anion → cation 
D)  Neutralization of an acid by a base 
A)  Cation + anion → electrolyte 
B)  Electrolyte → cation + anion 
C)  Electrolyte + anion → cation 
D)  Neutralization of an acid by a base

Question 11

Which of the following is true of Cl-?

Accepted Answer

A)  Is an electrolyte 
B)  Is an anion 
C)  Increases pH 
D)  Decreases pH 
A)  Is an electrolyte 
B)  Is an anion 
C)  Increases pH 
D)  Decreases pH

Question 12

ATP

Accepted Answer

A)  is a buffer, removing H+ from solution. 
B)  is an energy transfer molecule. 
C)  is a radioactive isotope of phosphate. 
D)  ionizes to H+, thereby lowering pH. 
A)  is a buffer, removing H+ from solution. 
B)  is an energy transfer molecule. 
C)  is a radioactive isotope of phosphate. 
D)  ionizes to H+, thereby lowering pH.

Question 13

The sharing of electrons is referred to as

Accepted Answer

A)  covalent bonding. 
B)  ionic bonding. 
C)  radioactive decay. 
D)  isotope formation. 
A)  covalent bonding. 
B)  ionic bonding. 
C)  radioactive decay. 
D)  isotope formation.

Question 14

A patient with a blood pH of 7.28

Accepted Answer

A)  has an excess of H+. 
B)  has a blood pH that is within normal limits. 
C)  is alkalotic. 
D)  has a blood pH that indicates a deficiency of acid. 
A)  has an excess of H+. 
B)  has a blood pH that is within normal limits. 
C)  is alkalotic. 
D)  has a blood pH that indicates a deficiency of acid.

Question 15

An atom has 4 protons,4 neutrons,and 4 electrons.It

Accepted Answer

A)  has an atomic number of 8. 
B)  is a cation. 
C)  has an atomic mass of 12. 
D)  has an atomic mass of 8. 
A)  has an atomic number of 8. 
B)  is a cation. 
C)  has an atomic mass of 12. 
D)  has an atomic mass of 8.

Question 16

Which of the following best describes a solution in which alcohol is the solvent?

Accepted Answer

A)  Tincture 
B)  Alkaline 
C)  Acid 
D)  Aqueous 
A)  Tincture 
B)  Alkaline 
C)  Acid 
D)  Aqueous

Question 17

Which of the following is most descriptive of a precipitate that forms during a chemical reaction?

Accepted Answer

A)  Acid 
B)  Base 
C)  Solid 
D)  Solution 
A)  Acid 
B)  Base 
C)  Solid 
D)  Solution

Question 18

Which compound is a waste product of cellular metabolism?

Accepted Answer

A)  Oxygen 
B)  Carbon dioxide 
C)  Catalyst 
D)  ATP 
A)  Oxygen 
B)  Carbon dioxide 
C)  Catalyst 
D)  ATP

Question 19

A catalyst

Accepted Answer

A)  is an H+-yielding molecule. 
B)  is an acid. 
C)  is an alkali. 
D)  increases the speed of a chemical reaction. 
A)  is an H+-yielding molecule. 
B)  is an acid. 
C)  is an alkali. 
D)  increases the speed of a chemical reaction.

Question 20

Which element must be present for a substance to be classified as organic?

Accepted Answer

A)  Iodine 
B)  Iron 
C)  Carbon 
D)  Calcium 
A)  Iodine 
B)  Iron 
C)  Carbon 
D)  Calcium

Exam 2: Basic Chemistry

Blood is called a colloidal suspension because

The word ferrous refers to

A molecule of water has a (+)charge at one and a (-)charge at the other end of the molecule.What is the best description?

NaCl,table salt,is called a(n)

Which of the following acts as a catalyst?

What happens when HCl is added to a solution with a pH of 7.45?

Which of the following is described by this statement? One atom of oxygen bonds covalently with two atoms of hydrogen.

Which of the following is a measurement of hydrogen ion concentration [H⁺]?

A combination of sugar granules and iron filings is best described as a(n):

Which of the following is descriptive of the chemical reaction in the previous question?

Which of the following is true of Cl-?

ATP

The sharing of electrons is referred to as

A patient with a blood pH of 7.28

An atom has 4 protons,4 neutrons,and 4 electrons.It

Which of the following best describes a solution in which alcohol is the solvent?

Which of the following is most descriptive of a precipitate that forms during a chemical reaction?

Which compound is a waste product of cellular metabolism?

A catalyst

Which element must be present for a substance to be classified as organic?

Introduction to the Human Body

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Human Development and Heredity

Filters

Which of the following is true of Cl^-?