Question 1

Water is a(n)

Accepted Answer

A)  molecule. 
B)  aqueous solvent. 
C)  compound. 
D)  all of the above. 
A)  molecule. 
B)  aqueous solvent. 
C)  compound. 
D)  all of the above. D

Question 2

In which of the following is the number of hydrogen ions greater?

Accepted Answer

A)  An alkaline solution 
B)  A basic solution 
C)  Blood 
D)  A solution with a pH of 6.2 
A)  An alkaline solution 
B)  A basic solution 
C)  Blood 
D)  A solution with a pH of 6.2 D

Question 3

A solution that has a pH of 6.8

Accepted Answer

A)  has a neutral pH. 
B)  is alkaline. 
C)  is basic. 
D)  is acidic. 
A)  has a neutral pH. 
B)  is alkaline. 
C)  is basic. 
D)  is acidic. D

Question 4

Which of the following is true of an anion?

Accepted Answer

A)  An anion always ionizes to form electrolytes. 
B)  An anion always has an atomic mass of 15. 
C)  An anion carries a negative charge. 
D)  A hydrogen ion is an anion. 
A)  An anion always ionizes to form electrolytes. 
B)  An anion always has an atomic mass of 15. 
C)  An anion carries a negative charge. 
D)  A hydrogen ion is an anion.

Question 5

An electrolyte

Accepted Answer

A)  dissociates into ions. 
B)  yields only cations. 
C)  always yields H+ and lowers pH. 
D)  always removes H+ and increases pH. 
A)  dissociates into ions. 
B)  yields only cations. 
C)  always yields H+ and lowers pH. 
D)  always removes H+ and increases pH.

Question 6

Which process refers to the dissociation of NaCl into Na⁺ and Cl-?

Accepted Answer

A)  Radioactivity 
B)  Ionization 
C)  Covalent bonding 
D)  Hydrogen bonding 
A)  Radioactivity 
B)  Ionization 
C)  Covalent bonding 
D)  Hydrogen bonding

Question 7

Which of the following can neutralize H⁺?

Accepted Answer

A)  Ca2+ 
B)  Na+ 
C)  OH- 
D)  H2O 
A)  Ca2+ 
B)  Na+ 
C)  OH- 
D)  H2O

Question 8

Which ion has 8 protons in the nucleus and 9 electrons in its orbits?

Accepted Answer

A)  Cation 
B)  Electrolyte 
C)  Acid 
D)  Anion 
A)  Cation 
B)  Electrolyte 
C)  Acid 
D)  Anion

Question 9

What is the energy-transferring molecule?

Accepted Answer

A)  H+ 
B)  ATP 
C)  Ca2+ 
D)  NaCl 
A)  H+ 
B)  ATP 
C)  Ca2+ 
D)  NaCl

Question 10

An atom of oxygen shares its outer shell electrons with two hydrogen atoms thereby

Accepted Answer

A)  forming an acid. 
B)  ionizing. 
C)  forming a molecule of water. 
D)  forming an anion and cation. 
A)  forming an acid. 
B)  ionizing. 
C)  forming a molecule of water. 
D)  forming an anion and cation.

Question 11

An atom has 1 proton,0 neutrons,and 1 electron.What will convert this atom to a cation?

Accepted Answer

A)  Add 1 neutron. 
B)  Add 1 proton. 
C)  Lose 1 electron. 
D)  Add 1 proton, 2 neutrons, and 1 electron. 
A)  Add 1 neutron. 
B)  Add 1 proton. 
C)  Lose 1 electron. 
D)  Add 1 proton, 2 neutrons, and 1 electron.

Question 12

Which of the following are located in the orbits surrounding the nucleus?

Accepted Answer

A)  Isotopes 
B)  Protons 
C)  Electrons 
D)  Neutrons 
A)  Isotopes 
B)  Protons 
C)  Electrons 
D)  Neutrons

Question 13

The pH of urine

Accepted Answer

A)  is always more alkaline than blood. 
B)  is always acidic. 
C)  can be acidic or alkaline. 
D)  is more acidic than stomach contents. 
A)  is always more alkaline than blood. 
B)  is always acidic. 
C)  can be acidic or alkaline. 
D)  is more acidic than stomach contents.

Question 14

Which pH is considered neutral?

Accepted Answer

A)  7.35 
B)  7.45 
C)  7.00 
D)  14.0 
A)  7.35 
B)  7.45 
C)  7.00 
D)  14.0

Question 15

Which of the following is incorrect?

Accepted Answer

A)  Mixtures: suspension, colloidal suspension, solution 
B)  Ions: Na+, Cl-, Ca2+, K+ 
C)  Electrolytes: NaCl, KCl, CaCl2, HCO3- 
D)  Cations: Na+, Ca2+, K+, H+ 
A)  Mixtures: suspension, colloidal suspension, solution 
B)  Ions: Na+, Cl-, Ca2+, K+ 
C)  Electrolytes: NaCl, KCl, CaCl2, HCO3- 
D)  Cations: Na+, Ca2+, K+, H+

Question 16

Which of the following is true of Na⁺?

Accepted Answer

A)  It is an anion. 
B)  It is an electrolyte. 
C)  It bonds ionically with Ca2+. 
D)  It is a cation. 
A)  It is an anion. 
B)  It is an electrolyte. 
C)  It bonds ionically with Ca2+. 
D)  It is a cation.

Question 17

Which of the following is correct about the following reaction: NaCl ↔ Na⁺ + Cl-?

Accepted Answer

A)  Neutralization 
B)  Ionization 
C)  Anabolic 
D)  Irreversible 
A)  Neutralization 
B)  Ionization 
C)  Anabolic 
D)  Irreversible

Question 18

Which of the following is true of iodine and radioactive iodine?

Accepted Answer

A)  Both have the same atomic numbers. 
B)  Both have the same atomic masses. 
C)  Neither has electrons in its orbit. 
D)  Both create radiation hazards. 
A)  Both have the same atomic numbers. 
B)  Both have the same atomic masses. 
C)  Neither has electrons in its orbit. 
D)  Both create radiation hazards.

Question 19

Zinc,selenium,cobalt,and iodine are all

Accepted Answer

A)  trace elements. 
B)  compounds. 
C)  radioactive. 
D)  isotopes of hydrogen. 
A)  trace elements. 
B)  compounds. 
C)  radioactive. 
D)  isotopes of hydrogen.

Question 20

Which of the following increases the speed of a chemical reaction but is itself not used up in the chemical reaction?

Accepted Answer

A)  An isotope 
B)  A cation 
C)  A catalyst 
D)  ATP 
A)  An isotope 
B)  A cation 
C)  A catalyst 
D)  ATP

Exam 2: Basic Chemistry

Water is a(n)

In which of the following is the number of hydrogen ions greater?

A solution that has a pH of 6.8

Which of the following is true of an anion?

An electrolyte

Which process refers to the dissociation of NaCl into Na⁺ and Cl-?

Which of the following can neutralize H⁺?

Which ion has 8 protons in the nucleus and 9 electrons in its orbits?

What is the energy-transferring molecule?

An atom of oxygen shares its outer shell electrons with two hydrogen atoms thereby

An atom has 1 proton,0 neutrons,and 1 electron.What will convert this atom to a cation?

Which of the following are located in the orbits surrounding the nucleus?

The pH of urine

Which pH is considered neutral?

Which of the following is incorrect?

Which of the following is true of Na⁺?

Which of the following is correct about the following reaction: NaCl ↔ Na⁺ + Cl-?

Which of the following is true of iodine and radioactive iodine?

Zinc,selenium,cobalt,and iodine are all

Which of the following increases the speed of a chemical reaction but is itself not used up in the chemical reaction?

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 correct about the following reaction: NaCl ↔ Na⁺ + Cl^-?