Question 1

Figure 2.4B&#10;  &#10;Which atom is depicted in the accompanying figure?&#10;A) &#8203;hydrogen&#10;B) &#8203;helium&#10;C) &#8203;carbon&#10;D) &#8203;nitrogen&#10;E) &#8203;oxygen

Accepted Answer

C

Question 2

The ____ of an atom have no charge.&#10;A) &#8203;electrons&#10;B) &#8203;protons&#10;C) &#8203;neutrons&#10;D) &#8203;ions&#10;E) &#8203;nuclei

Accepted Answer

C

Question 3

What is the smallest unit of an element that retains the properties of that element?&#10;A) &#8203;atom&#10;B) &#8203;compound&#10;C) &#8203;ion&#10;D) &#8203;molecule&#10;E) &#8203;mixture

Accepted Answer

A

Question 4

Figure 2.4C&#10;  &#10;Which atom is depicted in the accompanying figure?&#10;A) &#8203;hydrogen&#10;B) &#8203;sodium&#10;C) &#8203;helium&#10;D) &#8203;chlorine&#10;E) &#8203;oxygen

Accepted Answer

The answer of Figure 2.4C&#10;  &#10;Which atom is depicted...

Question 5

Isotopes of atoms ____.&#10;A) &#8203;have the same number of neutrons but a different number of protons&#10;B) &#8203;behave the same chemically and physically but differ biologically from other isotopes&#10;C) &#8203;are the same physically and biologically but differ from other isotopes chemically&#10;D) &#8203;have the same number of protons but a different number of neutrons&#10;E) &#8203;are produced when atoms lose electrons

Accepted Answer

The answer of Isotopes of atoms ____.&#10;A) &#8203;have the same...

Question 6

The ____ of an atom have a negative charge.&#10;A) &#8203;nuclei&#10;B) &#8203;protons&#10;C) &#8203;neutrons&#10;D) &#8203;ions&#10;E) &#8203;electrons

Accepted Answer

The answer of The ____ of an atom have a...

Question 7

The atomic number of an atom refers to its ____.&#10;A) &#8203;mass or weight&#10;B) &#8203;number of protons&#10;C) number of protons and neutrons&#8203;&#10;D) &#8203;number of neutrons&#10;E) &#8203;number of electrons

Accepted Answer

The answer of The atomic number of an atom refers...

Question 8

How much mercury can the average human safely consume per day?&#10;A) &#8203;2 micrograms&#10;B) 7 micrograms&#8203;&#10;C) &#8203;12 micrograms&#10;D) 55 micrograms&#8203;&#10;E) 90 micrograms&#8203;

Accepted Answer

The answer of How much mercury can the average human...

Question 9

Figure 2.4A&#8203;&#10;  &#10;Based on its outer shell, the atom in the accompanying figure would be characterized as ____.&#10;A) &#8203;very stable&#10;B) &#8203;somewhat stable&#10;C) &#8203;somewhat unstable&#10;D) &#8203;very unstable&#10;E) &#8203;radioactive

Accepted Answer

The answer of Figure 2.4A&#8203;&#10;  &#10;Based on its outer...

Question 10

The mass number of an atom is determined by the combined masses of its ____.&#10;A) neutrons and protons&#10;B) neutrons and electrons&#10;C) protons and electrons&#10;D) protons, neutrons, and electrons&#10;E) neutrons, nucleus, and electrons

Accepted Answer

The answer of The mass number of an atom is...

Question 11

Which substance is not an element?&#8203;&#10;A) &#8203;chlorine&#10;B) &#8203;oxygen&#10;C) &#8203;carbon&#10;D) &#8203;water&#10;E) &#8203;hydrogen

Accepted Answer

The answer of Which substance is not an element?&#8203;&#10;A) &#8203;chlorine&#10;B)...

Question 12

Which subatomic particles have a negative charge?&#10;A) &#8203;neutrons only&#10;B) &#8203;protons only&#10;C) &#8203;electrons only&#10;D) both neutrons and protons&#8203;&#10;E) &#8203;both protons and electrons

Accepted Answer

The answer of Which subatomic particles have a negative charge?&#10;A)...

Question 13

The radioisotope 14C can be used as a research tracer because it ____.&#10;A) &#8203;decays to 12C&#10;B) &#8203;has a different number of protons than 12C&#10;C) &#8203;has fewer neutrons than 12C&#10;D) &#8203;behaves the same chemically as 12C&#10;E) &#8203;has six carbons and six neutrons

Accepted Answer

The answer of The radioisotope 14C can be used as...

Question 14

Tracers are elements that ____.&#10;A) &#8203;are used in minute amounts in plants&#10;B) &#8203;can be monitored through biochemical reactions&#10;C) &#8203;must be inert&#10;D) &#8203;have an unbalanced electrical charge&#10;E) &#8203;must have a stable nucleus

Accepted Answer

The answer of Tracers are elements that ____.&#10;A) &#8203;are used...

Question 15

Isotopes of an element are differentiated by their ____.&#10;A) &#8203;atomic weight&#10;B) &#8203;number of orbital shells&#10;C) &#8203;element name&#10;D) &#8203;mass number&#10;E) &#8203;electron profile

Accepted Answer

The answer of Isotopes of an element are differentiated by...

Question 16

In the chemical shorthand, 14C, the 14 represents the number of ____.&#10;A) &#8203;excess neutrons&#10;B) &#8203;protons plus neutrons&#10;C) &#8203;electrons&#10;D) &#8203;protons plus electrons&#10;E) &#8203;radioactive particles

Accepted Answer

The answer of In the chemical shorthand, 14C, the 14...

Question 17

The nucleus of an atom contains ____.&#10;A) &#8203;neutrons and protons&#10;B) &#8203;neutrons and electrons&#10;C) &#8203;protons and electrons&#10;D) &#8203;protons only&#10;E) &#8203;neutrons only

Accepted Answer

The answer of The nucleus of an atom contains ____.&#10;A)...

Question 18

What is the primary reason for the occurrence of mercury in the human body?&#10;A) &#8203;It is biologically inactive and dormant.&#10;B) &#8203;It provides vital biological functions in trace amounts.&#10;C) &#8203;It is needed to kill bacteria.&#10;D) &#8203;It is a byproduct of cellular function.&#10;E) &#8203;It is consumed through seafood.

Accepted Answer

The answer of What is the primary reason for the...

Question 19

Radioactive isotopes have ____.&#10;A) &#8203;excess electrons&#10;B) &#8203;excess protons&#10;C) &#8203;excess neutrons&#10;D) &#8203;insufficient neutrons&#10;E) &#8203;insufficient protons

Accepted Answer

The answer of Radioactive isotopes have ____.&#10;A) &#8203;excess electrons&#10;B) &#8203;excess...

Question 20

All isotopes of an element have a different number of ____.&#10;A) &#8203;electrons&#10;B) &#8203;protons&#10;C) &#8203;neutrons&#10;D) &#8203;orbital shells&#10;E) &#8203;atoms

Accepted Answer

The answer of All isotopes of an element have a...

Question 21

Argon has 18 protons. How many electrons are in its third energy level?&#10;A) &#8203;2&#10;B) &#8203;4&#10;C) &#8203;6&#10;D) &#8203;8&#10;E) &#8203;10

Accepted Answer

The answer of Argon has 18 protons. How many electrons...

Question 22

The column of water extending in tubes from plant roots to leaves is maintained by ____.&#10;A) &#8203;hydrophilic interactions&#10;B) &#8203;ionic bonds&#10;C) &#8203;covalent bonds&#10;D) &#8203;hydrophobic interactions&#10;E) &#8203;cohesion between water molecules

Accepted Answer

The answer of The column of water extending in tubes...

Question 23

Atoms become ____ in order to achieve a full outer orbital shell.&#10;A) &#8203;free radicals&#10;B) &#8203;ions&#10;C) &#8203;unstable&#10;D) &#8203;radioactive&#10;E) &#8203;covalents

Accepted Answer

The answer of Atoms become ____ in order to achieve...

Question 24

A salt will dissolve in water to form ____.&#10;A) &#8203;acids&#10;B) &#8203;only hydrogen and oxygen bonds&#10;C) &#8203;ions other than H+ and OH-&#10;D) &#8203;bases&#10;E) &#8203;buffers

Accepted Answer

The answer of A salt will dissolve in water to...

Question 25

Which statement is false?&#10;A) &#8203;A molecule must be made of at least two atoms.&#10;B) &#8203;Compounds are made of elements.&#10;C) &#8203;Two atoms of oxygen make a molecule of oxygen.&#10;D) &#8203;Chemical bonds form between molecules of solute and solvent.&#10;E) &#8203;Elements are found in compounds and molecules.

Accepted Answer

The answer of Which statement is false?&#10;A) &#8203;A molecule must...

Question 26

When exposed to water, sodium chloride (NaCl) ____.&#10;A) &#8203;dissolves into Na+ and Cl- ions&#10;B) &#8203;crystallizes into a solid&#10;C) &#8203;dissolves into Na- and Cl+ ions&#10;D) &#8203;crystallizes into a liquid&#10;E) &#8203;forms a hydrophobic compound

Accepted Answer

The answer of When exposed to water, sodium chloride (NaCl)...

Question 27

In ____ bonds, both atoms exert the same pull on shared electrons.&#10;A) &#8203;triple covalent&#10;B) &#8203;polar covalent&#10;C) &#8203;double covalent&#10;D) &#8203;nonpolar covalent&#10;E) &#8203;coordinate covalent

Accepted Answer

The answer of In ____ bonds, both atoms exert the...

Question 28

The solvent, cohesive, and temperature stabilization properties of water are primarily due to its ____.&#10;A) &#8203;ability to promote hydrophilic interactions&#10;B) &#8203;ionic bonds&#10;C) &#8203;hydrogen bonds&#10;D) &#8203;ability to promote hydrophobic interactions&#10;E) &#8203;nonpolar nature

Accepted Answer

The answer of The solvent, cohesive, and temperature stabilization properties...

Question 29

Nitrogen, with an atomic number of 7, has ____ electron(s) in the first energy level and ____ electrons in the second energy level.&#10;A) &#8203;one; six&#10;B) &#8203;two; five&#10;C) &#8203;three; four&#10;D) &#8203;four; three&#10;E) &#8203;five; two

Accepted Answer

The answer of Nitrogen, with an atomic number of 7,...

Question 30

A hydrogen bond is an attraction between a(n) ____ hydrogen atom and another hydrogen atom taking part in ____.&#10;A) &#8203;covalently bonded; the same polar covalent bond&#10;B) &#8203;ionically bonded; the same polar covalent bond&#10;C) &#8203;covalently bonded; a separate polar covalent bond&#10;D) &#8203;ionically bonded; a separate nonpolar covalent bond&#10;E) &#8203;nonpolar covalently bonded; a separate nonpolar covalent bond

Accepted Answer

The answer of A hydrogen bond is an attraction between...

Question 31

Atoms with a(n) ____ are more likely to form chemical bonds.&#10;A) &#8203;filled outer orbital shell&#10;B) &#8203;unfilled outer orbital shell&#10;C) &#8203;filled inner orbital shell&#10;D) &#8203;unfilled inner orbital shell&#10;E) &#8203;large number of orbital shells

Accepted Answer

The answer of Atoms with a(n) ____ are more likely...

Question 32

&#34;Acidic&#34; is an appropriate description for four of the following. Which one is the exception?&#10;A) &#8203;excess hydrogen ions&#10;B) &#8203;the contents of the stomach&#10;C) &#8203;magnesium hydroxide&#10;D) &#8203;HCl&#10;E) &#8203;a pH less than 7

Accepted Answer

The answer of &#34;Acidic&#34; is an appropriate description for four...

Question 33

The most likely reason that glucose dissolves in water is that it is ____.&#10;A) &#8203;an ionic compound&#10;B) &#8203;a polysaccharide&#10;C) &#8203;polar and forms many hydrogen bonds with the water molecules&#10;D) &#8203;an extremely unstable molecule&#10;E) &#8203;highly nonpolar

Accepted Answer

The answer of The most likely reason that glucose dissolves...

Question 34

The radioactive decay of 14C produces ____.&#10;A) &#8203;carbon 12&#10;B) &#8203;carbon 13&#10;C) &#8203;more carbon 14&#10;D) &#8203;nitrogen 14&#10;E) &#8203;oxygen 14

Accepted Answer

The answer of The radioactive decay of 14C produces ____.&#10;A)...

Question 35

Figure 2.9B&#10;  &#10;The dashed line in the accompanying figure represents a(n) ____.&#10;A) &#8203;covalent bond&#10;B) &#8203;ionic bond&#10;C) &#8203;hydrogen bond&#10;D) &#8203;polar covalent bond&#10;E) &#8203;hydrophobic interaction

Accepted Answer

The answer of Figure 2.9B&#10;  &#10;The dashed line in...

Question 36

A molecule consists of ____.&#10;A) &#8203;radioactive compounds&#10;B) &#8203;two or more atoms of the same element&#10;C) &#8203;electrically charged elements&#10;D) &#8203;elements with one or more extra neutrons&#10;E) &#8203;atoms held together by chemical bonds

Accepted Answer

The answer of A molecule consists of ____.&#10;A) &#8203;radioactive compounds&#10;B)...

Question 37

Carbon dioxide is an example of a(n) ____.&#10;A) &#8203;atom&#10;B) &#8203;ion&#10;C) &#8203;compound&#10;D) &#8203;mixture&#10;E) &#8203;element

Accepted Answer

The answer of Carbon dioxide is an example of a(n)...

Question 38

The bond in table salt (NaCl) is ____.&#10;A) &#8203;polar&#10;B) &#8203;ionic&#10;C) &#8203;covalent&#10;D) &#8203;double&#10;E) &#8203;nonpolar

Accepted Answer

The answer of The bond in table salt (NaCl) is...

Question 39

In covalent bonds, ____.&#10;A) &#8203;atoms share electrons&#10;B) &#8203;atoms give up electrons&#10;C) &#8203;atoms accept electrons&#10;D) &#8203;electrons cannot be shared equally&#10;E) &#8203;electrons are always shared equally

Accepted Answer

The answer of In covalent bonds, ____.&#10;A) &#8203;atoms share electrons&#10;B)...

Question 40

Water is important to the interactions of biological molecules because it ____.&#10;A) &#8203;is a good buffer&#10;B) &#8203;destabilizes temperature&#10;C) &#8203;is a poor solvent for polar and ionic substances&#10;D) &#8203;has weak cohesive properties&#10;E) &#8203;promotes hydrophobic and hydrophilic interactions

Accepted Answer

The answer of Water is important to the interactions of...

Question 41

Blood pH is kept near a value of 7.3 - 7.5 because of ____.&#10;A) &#8203;salts&#10;B) &#8203;buffers&#10;C) &#8203;acids&#10;D) &#8203;bases&#10;E) &#8203;water

Accepted Answer

The answer of Blood pH is kept near a value...

Question 42

The sharing of two pairs of electrons between two atoms is called a(n) ____________________.

Accepted Answer

The answer of The sharing of two pairs of electrons...

Question 43

&#8203;Classification. The various energy levels in an atom of magnesium (24Mg) have different numbers of electrons. Use the numbers below to answer the following questions.&#10;a.&#8203;1&#10;b.&#8203;2&#10;c.&#8203;3&#10;d.&#8203;6&#10;e.&#8203;8&#10;The number of electrons in the third energy level

Accepted Answer

The answer of &#8203;Classification. The various energy levels in an...

Question 44

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
The bond type holding several molecules of water together

Accepted Answer

The answer of Classification. The following are types of chemical...

Question 45

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
The bond type holding several molecules of water together

Accepted Answer

The answer of Classification. The following are types of chemical...

Question 46

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word.
a.hydrophobic
b.hydrophilic
c.salt
d.solute
e.solvent
A substance that dissolves in water

Accepted Answer

The answer of Classification. The following are important terms relating...

Question 47

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
The bond type holding several molecules of water together

Accepted Answer

The answer of Classification. The following are types of chemical...

Question 48

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
The bond type holding several molecules of water together

Accepted Answer

The answer of Classification. The following are types of chemical...

Question 49

The ability of a solution to resist changes in pH depends on its ____________________ capacity.

Accepted Answer

The answer of The ability of a solution to resist...

Question 50

&#8203;Classification. The various energy levels in an atom of magnesium (24Mg) have different numbers of electrons. Use the numbers below to answer the following questions.&#10;a.&#8203;1&#10;b.&#8203;2&#10;c.&#8203;3&#10;d.&#8203;6&#10;e.&#8203;8&#10;The number of electrons in the second energy level

Accepted Answer

The answer of &#8203;Classification. The various energy levels in an...

Question 51

Water surface tension is caused by ____________________ bonds.

Accepted Answer

The answer of Water surface tension is caused by ____________________...

Question 52

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word.
a.hydrophobic
b.hydrophilic
c.salt
d.solute
e.solvent
A substance that dissolves in water

Accepted Answer

The answer of Classification. The following are important terms relating...

Question 53

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
The bond type holding several molecules of water together

Accepted Answer

The answer of Classification. The following are types of chemical...

Question 54

The predictable rate of ____________________ allows tracers to be used in research studies.

Accepted Answer

The answer of The predictable rate of ____________________ allows tracers...

Question 55

&#8203;Classification. The various energy levels in an atom of magnesium (24Mg) have different numbers of electrons. Use the numbers below to answer the following questions.&#10;a.&#8203;1&#10;b.&#8203;2&#10;c.&#8203;3&#10;d.&#8203;6&#10;e.&#8203;8&#10;The number of electrons in the first energy level

Accepted Answer

The answer of &#8203;Classification. The various energy levels in an...

Question 56

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
The bond type holding several molecules of water together

Accepted Answer

The answer of Classification. The following are types of chemical...

Question 57

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word.
a.hydrophobic
b.hydrophilic
c.salt
d.solute
e.solvent
A substance that dissolves in water

Accepted Answer

The answer of Classification. The following are important terms relating...

Question 58

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word.
a.hydrophobic
b.hydrophilic
c.salt
d.solute
e.solvent
A substance that dissolves in water

Accepted Answer

The answer of Classification. The following are important terms relating...

Question 59

A solution with a pH of 9 has ____ times fewer hydrogen ions than a solution with a pH of 6.&#10;A) two&#8203;&#10;B) &#8203;four&#10;C) &#8203;10&#10;D) &#8203;100&#10;E) &#8203;1,000

Accepted Answer

The answer of A solution with a pH of 9...

Question 60

14Cis a radioactive isotope, and it turns into ____________________ when it decays.

Accepted Answer

The answer of 14Cis a radioactive isotope, and it turns...

Question 61

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word.
a.hydrophobic
b.hydrophilic
c.salt
d.solute
e.solvent
A substance that dissolves in water

Accepted Answer

The answer of Classification. The following are important terms relating...

Question 62

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word.
a.hydrophobic
b.hydrophilic
c.salt
d.solute
e.solvent
A substance that dissolves in water

Accepted Answer

The answer of Classification. The following are important terms relating...

Question 63

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word.
a.hydrophobic
b.hydrophilic
c.salt
d.solute
e.solvent
A substance that dissolves in water

Accepted Answer

The answer of Classification. The following are important terms relating...

Question 64

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word.
a.hydrophobic
b.hydrophilic
c.salt
d.solute
e.solvent
A substance that dissolves in water

Accepted Answer

The answer of Classification. The following are important terms relating...

Deck 2: Lifes Chemical Basis