Question 1

An atom has 3 protons,4 neutrons,and 3 electrons; another atom has 3 protons,3 neutrons,and 3 electrons.Which of the following is most descriptive of this pair of atoms?

Accepted Answer

A) Mixture 
B) Cation 
C) Electrolyte 
D) Isotope 
A) Mixture 
B) Cation 
C) Electrolyte 
D) Isotope

Question 2

Which of the following represents bicarbonate,an anion that is important in acid-base regulation?

Accepted Answer

A) HCl 
B) Ca(OH)₂ 
C) HCO₃- 
D) KCl 
A) HCl 
B) Ca(OH)₂ 
C) HCO₃- 
D) KCl

Question 3

Which group is correct?

Accepted Answer

A) Blood pH 7.50,alkaline,turns litmus paper pink 
B) Blood pH 7.2,acidosis,turns litmus paper pink 
C) Blood pH 7.35,normal blood pH,turns litmus paper blue 
D) More than one of the above are true. 
A) Blood pH 7.50,alkaline,turns litmus paper pink 
B) Blood pH 7.2,acidosis,turns litmus paper pink 
C) Blood pH 7.35,normal blood pH,turns litmus paper blue 
D) More than one of the above are true.

Question 4

Which group is correct?

Accepted Answer

A) Subatomic particles located within the nucleus: protons,neutrons,electrons 
B) Common cations: Na+,K+,HCO₃-,NH₄+ 
C) Common molecules: O₂,N₂,H₂O 
D) Bases: NaOH,Na HCO₃-,HCl 
A) Subatomic particles located within the nucleus: protons,neutrons,electrons 
B) Common cations: Na+,K+,HCO₃-,NH₄+ 
C) Common molecules: O₂,N₂,H₂O 
D) Bases: NaOH,Na HCO₃-,HCl

Question 5

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 6

Which of the following is an anion?

Accepted Answer

A) NaCl 
B) KCl 
C) H₂SO₄ 
D) HCO₃- 
A) NaCl 
B) KCl 
C) H₂SO₄ 
D) HCO₃-

Question 7

The addition of H⁺ to blood

Accepted Answer

A) increases blood pH. 
B) makes the blood more acidic. 
C) makes the blood more alkaline. 
D) changes the blood pH from 7.4 to 7.8. 
A) increases blood pH. 
B) makes the blood more acidic. 
C) makes the blood more alkaline. 
D) changes the blood pH from 7.4 to 7.8.

Question 8

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 9

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 10

What kind of ion would have 8 protons in its 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 11

Which of the following is an anion?

Accepted Answer

A) Sodium ion 
B) Potassium ion 
C) Chloride ion 
D) Calcium ion 
A) Sodium ion 
B) Potassium ion 
C) Chloride ion 
D) Calcium ion

Question 12

Which of the following is true of Na⁺?

Accepted Answer

A) Called the sodium ion 
B) Has fewer protons than electrons 
C) Called an anion 
D) Lowers pH 
A) Called the sodium ion 
B) Has fewer protons than electrons 
C) Called an anion 
D) Lowers pH

Question 13

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 14

Which of the following is most descriptive of HCl?

Accepted Answer

A) Is called bicarbonate 
B) Is an acid 
C) Raises pH 
D) Dissociates into Na+ and Cl- 
A) Is called bicarbonate 
B) Is an acid 
C) Raises pH 
D) Dissociates into Na+ and Cl-

Question 15

Which of the following illustrates antacid activity?

Accepted Answer

A) NaCl → Na+ + Cl- 
B) HCl → H+ + Cl- 
C) Mg(OH)₂ + HCl → MgCl₂ + H₂O 
D) KCl → K+ + Cl- 
A) NaCl → Na+ + Cl- 
B) HCl → H+ + Cl- 
C) Mg(OH)₂ + HCl → MgCl₂ + H₂O 
D) KCl → K+ + Cl-

Question 16

Iron can be a(n)

Accepted Answer

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

Question 17

A cation is a(n)

Accepted Answer

A) positively charged ion. 
B) electrolyte. 
C) isotope. 
D) ion that has an atomic mass of 2. 
A) positively charged ion. 
B) electrolyte. 
C) isotope. 
D) ion that has an atomic mass of 2.

Question 18

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 19

An atom has 2 protons,2 neutrons,and 2 electrons; it has an atomic

Accepted Answer

A) number of 6. 
B) mass of 2. 
C) mass of 4. 
D) number of 4. 
A) number of 6. 
B) mass of 2. 
C) mass of 4. 
D) number of 4.

Question 20

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

Exam 2: Basic Chemistry

An atom has 3 protons,4 neutrons,and 3 electrons; another atom has 3 protons,3 neutrons,and 3 electrons.Which of the following is most descriptive of this pair of atoms?

Which of the following represents bicarbonate,an anion that is important in acid-base regulation?

Which group is correct?

Which group is correct?

A catalyst

Which of the following is an anion?

The addition of H⁺ to blood

Blood is called a colloidal suspension because

The pH of urine

What kind of ion would have 8 protons in its nucleus and 9 electrons in its orbits?

Which of the following is an anion?

Which of the following is true of Na⁺?

What is the energy-transferring molecule?

Which of the following is most descriptive of HCl?

Which of the following illustrates antacid activity?

Iron can be a(n)

A cation is a(n)

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

An atom has 2 protons,2 neutrons,and 2 electrons; it has an atomic

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

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

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