Question 1

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 2

The heart pushes blood into the blood vessels as chemical energy is converted to which form of energy?

Accepted Answer

A) Thermal 
B) Radiant 
C) Mechanical 
D) Nuclear 
A) Thermal 
B) Radiant 
C) Mechanical 
D) Nuclear

Question 3

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 4

An atom that has 3 protons,4 neutrons,and 3 electrons

Accepted Answer

A) has an atomic mass of 7. 
B) is a cation. 
C) has an atomic number of 4. 
D) has an atomic number of 10. 
A) has an atomic mass of 7. 
B) is a cation. 
C) has an atomic number of 4. 
D) has an atomic number of 10.

Question 5

Which of the following is most descriptive of the function of an enzyme?

Accepted Answer

A) Neutralization 
B) Ionization 
C) Catalyst 
D) pH 
A) Neutralization 
B) Ionization 
C) Catalyst 
D) pH

Question 6

Which compound is the universal solvent?

Accepted Answer

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

Question 7

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 8

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 9

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 10

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 11

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 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

An atom has 1 proton,0 neutrons,and 1 electron; its isotope has

Accepted Answer

A) 2 electrons and 0 neutrons. 
B) 2 protons and 2 neutrons. 
C) 1 proton and 1 neutron. 
D) 2 protons and 0 neutrons. 
A) 2 electrons and 0 neutrons. 
B) 2 protons and 2 neutrons. 
C) 1 proton and 1 neutron. 
D) 2 protons and 0 neutrons.

Question 14

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 15

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.

Question 16

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 17

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 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

An atom of oxygen has an atomic number of 8.Therefore

Accepted Answer

A) it can share electrons with another identical atom. 
B) it can share electrons with another oxygen atom. 
C) it can form O₂. 
D) All of the above are true. 
A) it can share electrons with another identical atom. 
B) it can share electrons with another oxygen atom. 
C) it can form O₂. 
D) All of the above are true.

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

Which pH is considered neutral?

The heart pushes blood into the blood vessels as chemical energy is converted to which form of energy?

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

An atom that has 3 protons,4 neutrons,and 3 electrons

Which of the following is most descriptive of the function of an enzyme?

Which compound is the universal solvent?

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

Which of the following is incorrect?

The sharing of electrons is referred to as

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

Which of the following is true of an anion?

ATP

An atom has 1 proton,0 neutrons,and 1 electron; its isotope has

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

A solution that has a pH of 6.8

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

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

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

An atom of oxygen has an atomic number of 8.Therefore

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 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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