Question 1

Each whole number on the pH scale represents a ________ - fold difference in hydrogen ion concentration.

Accepted Answer

A)  15 
B)  100 
C)  20 
D)  10 
E)  2 
A)  15 
B)  100 
C)  20 
D)  10 
E)  2

Question 2

A solution that has a pH of 6 has ten times the hydrogen ion concentration of a solution with a pH of

Accepted Answer

A)  7. 
B)  5. 
C)  8. 
D)  2. 
E)  0.6. 
A)  7. 
B)  5. 
C)  8. 
D)  2. 
E)  0.6.

Question 3

All isotopes of an element have the same number of electrons.

Accepted Answer

A) True 
 B)False

Question 4

A ________ reaction is symbolized as AB→A+B.

Accepted Answer

The answer of A ________ reaction is symbolized as AB→A+B....

Question 5

Which of the following is NOT organic?

Accepted Answer

A)  A carbohydrate 
B)  A protein 
C)  A lipid 
D)  Carbon dioxide 
E)  A nucleic acid 
A)  A carbohydrate 
B)  A protein 
C)  A lipid 
D)  Carbon dioxide 
E)  A nucleic acid

Question 6

When two or more atoms (reactants)bond to form a more complex structure (product)the reaction is called synthesis.

Accepted Answer

A) True 
 B)False

Question 7

A covalent bond is formed by two atoms that share electrons.

Accepted Answer

A) True 
 B)False

Question 8

At present,there are 90 known naturally occurring ________.

Accepted Answer

The answer of At present,there are 90 known naturally occurring...

Question 9

Water accounts for 2/3 of the weight of an adult human.

Accepted Answer

A) True 
 B)False

Question 10

The first electron shell of an atom can hold a maximum of

Accepted Answer

A)  1 electron. 
B)  2 electrons. 
C)  4 electrons. 
D)  8 electrons. 
E)  16 electrons. 
A)  1 electron. 
B)  2 electrons. 
C)  4 electrons. 
D)  8 electrons. 
E)  16 electrons.

Question 11

The electrons of an atom occupy one or more areas of space called

Accepted Answer

A)  bonds. 
B)  shells. 
C)  regions. 
D)  ions. 
E)  nuclei. 
A)  bonds. 
B)  shells. 
C)  regions. 
D)  ions. 
E)  nuclei.

Question 12

The smallest subatomic particle is the ________.

Accepted Answer

The answer of The smallest subatomic particle is the ________....

Question 13

Sodium and chloride ions readily combine because they have opposite charges.

Accepted Answer

A) True 
 B)False

Question 14

FX --> F + X is an example of a ________ reaction.

Accepted Answer

The answer of FX --> F + X is an...

Question 15

All of the food that we eat,liquids that we drink and medications that we take are

Accepted Answer

A)  chemicals. 
B)  vitamins. 
C)  proteins. 
D)  nucleic acids. 
E)  carbohydrates. 
A)  chemicals. 
B)  vitamins. 
C)  proteins. 
D)  nucleic acids. 
E)  carbohydrates.

Question 16

Steroid molecules have four connected rings of carbon atoms.

Accepted Answer

A) True 
 B)False

Question 17

Inorganic substances that usually dissociate in water are called

Accepted Answer

A)  organic compounds. 
B)  non-electrolytes. 
C)  electrolytes. 
D)  lipids. 
E)  carbohydrates. 
A)  organic compounds. 
B)  non-electrolytes. 
C)  electrolytes. 
D)  lipids. 
E)  carbohydrates.

Question 18

In ____________ reactions,parts of one molecule can be removed and added to a different molecule.

Accepted Answer

The answer of In ____________ reactions,parts of one molecule can...

Question 19

As hydrogen ion concentration increases,the pH number

Accepted Answer

A)  gets. 
B)  gets smaller. 
C)  stays the same. 
D)  becomes negative. 
E)  approaches 14. 
A)  gets. 
B)  gets smaller. 
C)  stays the same. 
D)  becomes negative. 
E)  approaches 14.

Question 20

A molecule of a compound always contains definite kinds and numbers of atoms.

Accepted Answer

A) True 
 B)False

Each whole number on the pH scale represents a ________ - fold difference in hydrogen ion concentration.

A solution that has a pH of 6 has ten times the hydrogen ion concentration of a solution with a pH of

All isotopes of an element have the same number of electrons.

A ________ reaction is symbolized as AB→A+B.

Which of the following is NOT organic?

When two or more atoms (reactants)bond to form a more complex structure (product)the reaction is called synthesis.

A covalent bond is formed by two atoms that share electrons.

At present,there are 90 known naturally occurring ________.

Water accounts for 2/3 of the weight of an adult human.

The first electron shell of an atom can hold a maximum of

The electrons of an atom occupy one or more areas of space called

The smallest subatomic particle is the ________.

Sodium and chloride ions readily combine because they have opposite charges.

FX --> F + X is an example of a ________ reaction.

All of the food that we eat,liquids that we drink and medications that we take are

Steroid molecules have four connected rings of carbon atoms.

Inorganic substances that usually dissociate in water are called

In ____________ reactions,parts of one molecule can be removed and added to a different molecule.

As hydrogen ion concentration increases,the pH number

A molecule of a compound always contains definite kinds and numbers of atoms.

Introduction to Human Anatomy and Physiology

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Muscular System

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System

Water, electrolyte, and Acid-Base Balance

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Pregnancy, growth, development, and Genetics

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Exam 2: Chemical Basis of Life

Each whole number on the pH scale represents a ________ - fold difference in hydrogen ion concentration.

A solution that has a pH of 6 has ten times the hydrogen ion concentration of a solution with a pH of

All isotopes of an element have the same number of electrons.

A ________ reaction is symbolized as AB→A+B.

Which of the following is NOT organic?

When two or more atoms (reactants)bond to form a more complex structure (product)the reaction is called synthesis.

A covalent bond is formed by two atoms that share electrons.

At present,there are 90 known naturally occurring ________.

Water accounts for 2/3 of the weight of an adult human.

The first electron shell of an atom can hold a maximum of

The electrons of an atom occupy one or more areas of space called

The smallest subatomic particle is the ________.

Sodium and chloride ions readily combine because they have opposite charges.

FX --> F + X is an example of a ________ reaction.

All of the food that we eat,liquids that we drink and medications that we take are

Steroid molecules have four connected rings of carbon atoms.

Inorganic substances that usually dissociate in water are called

In ____________ reactions,parts of one molecule can be removed and added to a different molecule.

As hydrogen ion concentration increases,the pH number

A molecule of a compound always contains definite kinds and numbers of atoms.

Introduction to Human Anatomy and Physiology

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Muscular System

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System

Water, electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, growth, development, and Genetics

Filters