Question 1

An atom becomes an ion when:

Accepted Answer

A) it gains or loses neutrons. 
B) it forms a covalent bond. 
C) it gains or loses electrons. 
D) hydrogen ions are shared. 
E) it gains or loses protons. 
A) it gains or loses neutrons. 
B) it forms a covalent bond. 
C) it gains or loses electrons. 
D) hydrogen ions are shared. 
E) it gains or loses protons. C

Question 2

In hydrogen bonding,hydrogen nearly always pairs with:

Accepted Answer

A) another hydrogen. 
B) carbon. 
C) oxygen or nitrogen. 
D) sodium or chlorine. 
A) another hydrogen. 
B) carbon. 
C) oxygen or nitrogen. 
D) sodium or chlorine. C

Question 3

Atoms are electrically neutral.

Accepted Answer

A) True 
 B)False  True

Question 4

The high specific heat and surface tension of water are a result of:

Accepted Answer

A) ionic bonds. 
B) covalent bonds within the water molecules. 
C) the size of water molecules. 
D) hydrogen bonding between water molecules. 
E) covalent bonds between water molecules. 
A) ionic bonds. 
B) covalent bonds within the water molecules. 
C) the size of water molecules. 
D) hydrogen bonding between water molecules. 
E) covalent bonds between water molecules.

Question 5

Oxygen has six electrons in its second outer shell,and hydrogen has one.With how many hydrogen atoms will oxygen form covalent bonds?

Accepted Answer

A) eight 
B) one 
C) two 
D) six 
E) three 
A) eight 
B) one 
C) two 
D) six 
E) three

Question 6

What is chemical bonding? Explain the differences between covalent and ionic bonding.

Accepted Answer

Atoms react if they need electrons to co

Question 7

Chlorine has an atomic number of 17,and argon has an atomic number of 18.From this information alone,you can predict that:

Accepted Answer

A) argon has more neutrons than chlorine. 
B) argon is more chemically reactive than chlorine. 
C) argon will more readily ionize than chlorine. 
D) chlorine is more chemically reactive than argon. 
E) chlorine has more neutrons than argon. 
A) argon has more neutrons than chlorine. 
B) argon is more chemically reactive than chlorine. 
C) argon will more readily ionize than chlorine. 
D) chlorine is more chemically reactive than argon. 
E) chlorine has more neutrons than argon.

Question 8

Anything that occupies space and has mass is energy.

Accepted Answer

A) True 
 B)False

Question 9

You have been having trouble with acid indigestion recently.You buy some milk of magnesia,an antacid,from the drug store to relieve your indigestion.Milk of magnesia is a mixture of magnesium hydroxide in water.What makes milk of magnesia a good antacid? If you could chemically analyze your stomach fluids,what would you find before and after taking the antacid?

Accepted Answer

Magnesium hydroxide provides h

Question 10

What is the difference between an ionic and covalent bond?

Accepted Answer

A) In an ionic bond, one atom accepts electrons from the other; in a covalent bond, a pair of atoms share electrons. 
B) In an ionic bond, one atom has more electronegativity than the other; in a covalent bond, the atoms have the same electronegativity. 
C) Ionic bonding involves the inner electron shells; covalent bonding involves the valence electron shell. 
D) Ionic bonds form between atoms of different elements; covalent bonds form between atoms of the same element. 
A) In an ionic bond, one atom accepts electrons from the other; in a covalent bond, a pair of atoms share electrons. 
B) In an ionic bond, one atom has more electronegativity than the other; in a covalent bond, the atoms have the same electronegativity. 
C) Ionic bonding involves the inner electron shells; covalent bonding involves the valence electron shell. 
D) Ionic bonds form between atoms of different elements; covalent bonds form between atoms of the same element.

Question 11

Chemical reactions involve only the outermost electrons of an atom.

Accepted Answer

A) True 
 B)False

Question 12

An element with 22 protons,22 neutrons,and 22 electrons would have an atomic number of:

Accepted Answer

A) 44. 
B) 22. 
C) 66. 
D) 11. 
A) 44. 
B) 22. 
C) 66. 
D) 11.

Question 13

In a bottle of water,hydrogen bonding occurs between the hydrogen of one atom and a/an:

Accepted Answer

A) hydrogen atom in the same molecule. 
B) oxygen atom in a different molecule. 
C) oxygen atom in the same water molecule. 
D) hydrogen atom in a different molecule. 
A) hydrogen atom in the same molecule. 
B) oxygen atom in a different molecule. 
C) oxygen atom in the same water molecule. 
D) hydrogen atom in a different molecule.

Question 14

Which of the following is true of chemical bonds?

Accepted Answer

A) Atoms can achieve a higher energy state and less stability by forming bonds. 
B) Electrons are always shared. 
C) Electrons can be shared or completely transferred. 
D) Chemical bonds cannot occur between two identical atoms. 
A) Atoms can achieve a higher energy state and less stability by forming bonds. 
B) Electrons are always shared. 
C) Electrons can be shared or completely transferred. 
D) Chemical bonds cannot occur between two identical atoms.

Question 15

It takes more energy to raise the temperature of water than of alcohol because water has a higher ________.

Accepted Answer

The answer of It takes more energy to raise the...

Question 16

An atom will react with other atoms only until:

Accepted Answer

A) it has completely filled its outermost energy level. 
B) it has less stability. 
C) all of its inner orbitals have been filled. 
D) it forms four covalent bonds 
A) it has completely filled its outermost energy level. 
B) it has less stability. 
C) all of its inner orbitals have been filled. 
D) it forms four covalent bonds

Question 17

In what ways are hydrogen bonds and ionic bonds similar?

Accepted Answer

A) Both are based on attraction between atoms that carry differences in electrical charge. 
B) Both involve an even sharing of electrons between atoms. 
C) Both are based on attraction between two atoms where each carries a positive charge. 
D) Both are based on repulsion between atoms that carry differences in electrical charge. 
E) Both are based on attraction between two atoms where each carries a negative charge. 
A) Both are based on attraction between atoms that carry differences in electrical charge. 
B) Both involve an even sharing of electrons between atoms. 
C) Both are based on attraction between two atoms where each carries a positive charge. 
D) Both are based on repulsion between atoms that carry differences in electrical charge. 
E) Both are based on attraction between two atoms where each carries a negative charge.

Question 18

A signal molecule will ________ to a receptor if the molecules' shapes match,similar to a key in a lock.

Accepted Answer

The answer of A signal molecule will ________ to a...

Question 19

All the atoms of the same element will have the same:

Accepted Answer

A) number of protons. 
B) number of neutrons. 
C) number of protons and neutrons. 
D) mass. 
A) number of protons. 
B) number of neutrons. 
C) number of protons and neutrons. 
D) mass.

Question 20

You have a substance and begin a set of experiments in which you break it down into other substances through chemical reactions.After a few successive reactions,you discover a set of products that can't be broken down further,no matter what type of chemical reaction you attempt.These substances are:

Accepted Answer

A) protons. 
B) elements. 
C) neutrons. 
D) electrons. 
E) isotopes. 
A) protons. 
B) elements. 
C) neutrons. 
D) electrons. 
E) isotopes.

Exam 2: Fundamental Building Blocks: Chemistry, water, and Ph

An atom becomes an ion when:

In hydrogen bonding,hydrogen nearly always pairs with:

Atoms are electrically neutral.

The high specific heat and surface tension of water are a result of:

Oxygen has six electrons in its second outer shell,and hydrogen has one.With how many hydrogen atoms will oxygen form covalent bonds?

What is chemical bonding? Explain the differences between covalent and ionic bonding.

Chlorine has an atomic number of 17,and argon has an atomic number of 18.From this information alone,you can predict that:

Anything that occupies space and has mass is energy.

What is the difference between an ionic and covalent bond?

Chemical reactions involve only the outermost electrons of an atom.

An element with 22 protons,22 neutrons,and 22 electrons would have an atomic number of:

In a bottle of water,hydrogen bonding occurs between the hydrogen of one atom and a/an:

Which of the following is true of chemical bonds?

It takes more energy to raise the temperature of water than of alcohol because water has a higher ________.

An atom will react with other atoms only until:

In what ways are hydrogen bonds and ionic bonds similar?

A signal molecule will ________ to a receptor if the molecules' shapes match,similar to a key in a lock.

All the atoms of the same element will have the same:

Science As a Way of Learning: a Guide to the Natural World

Lifes Components: Biological Molecules

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Lifes Mainspring: an Introduction to Energy

Vital Harvest: Deriving Energy From Food

The Green Worlds Gift: Photosynthesis

The Links in Lifes Chain: Genetics and Cell Division

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

Passing on Lifes Information: Dna Structure and Replication

How Proteins Are Made: Genetic Transcription, translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late,traveling Far: the Evolution of Human Beings

Viruses,bacteria,archaea,and Protists: the Diversity of Life 1

Fungi: the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

How the Baby Came to Be: Human Reproduction

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

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