Question 1

Which of the following carries no net electrical charge?

Accepted Answer

A) An anion 
B) A cation 
C) A polar molecule 
D) An ion 
A) An anion 
B) A cation 
C) A polar molecule 
D) An ion

Question 2

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 3

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.

Question 4

Which of the following is most descriptive of the nucleus of the atom?

Accepted Answer

A) Contents determine the atomic number 
B) Contents determine the atomic mass 
C) "Home" of the protons 
D) All of the above 
A) Contents determine the atomic number 
B) Contents determine the atomic mass 
C) "Home" of the protons 
D) All of the above

Question 5

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 6

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 7

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 8

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 9

In the reaction HCl → H⁺ + Cl-

Accepted Answer

A) HCl ionizes,thereby yielding the cation (H+) and anion (Cl-). 
B) hydrochloric acid dissociates into an anion and cation. 
C) HCl dissociates into a hydrogen ion and chloride ion. 
D) All of the above are true. 
A) HCl ionizes,thereby yielding the cation (H+) and anion (Cl-). 
B) hydrochloric acid dissociates into an anion and cation. 
C) HCl dissociates into a hydrogen ion and chloride ion. 
D) All of the above are true.

Question 10

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

Which of the following carries no net electrical charge?

Which of the following is true of Na⁺?

Water is a(n)

Which of the following is most descriptive of the nucleus of the atom?

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

Zinc,selenium,cobalt,and iodine are all

Which of the following acts as a catalyst?

Which of the following is true of Cl^-?

In the reaction HCl → H⁺ + Cl^-

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 and Special Circulations

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

Filters

Exam 2: Basic Chemistry

Which of the following carries no net electrical charge?

Which of the following is true of Na⁺?

Water is a(n)

Which of the following is most descriptive of the nucleus of the atom?

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

Zinc,selenium,cobalt,and iodine are all

Which of the following acts as a catalyst?

Which of the following is true of Cl-?

In the reaction HCl → H⁺ + Cl-

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 and Special Circulations

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

Filters

Which of the following is true of Cl^-?

In the reaction HCl → H⁺ + Cl^-