an atom contains 2 hydrogen molecules and 1 oxygen molecule.. an atom contains 1 hydrogen atom and 2 oxygen molecules.. a molecule contains 2 hydrogen atoms and no oxygen atoms.. carbon,
Trang 1Chapter 02 Test Bank
Trang 28 All matter is composed of atoms of fundamental substances called
A carbon, hydrogen, oxygen, nitrogen
B carbon, hydrogen, oxygen, calcium
C carbon, hydrogen, calcium, nitrogen
D carbon, hydrogen, selenium, sodium
E sodium, calcium, nitrogen, selenium
9 An element with an atomic number of 6 contains 12 protons
Trang 318 The electrons of an atom occupy one or more areas of space called
Trang 426 A covalent bond is formed by two atoms that share electrons
A an atom contains 2 hydrogen molecules and 1 oxygen molecule
B an atom contains 1 hydrogen atom and 2 oxygen molecules
C a molecule contains 2 hydrogen atoms and 1 oxygen atom
D a molecule contains 1 hydrogen atom and 2 oxygen atoms
E a molecule contains 2 hydrogen atoms and no oxygen atoms
29 If two pairs of electrons are shared, the resulting bond is called a double covalent bond
Trang 536 A molecular formula represents the numbers and types of atoms in a molecule
Trang 646 pH is a measure of _ ion concentration
E None of the above
51 Each whole number on the pH scale represents a - fold difference in hydrogen ion
Trang 753 A solution that has a pH of 6 has ten times the hydrogen ion concentration of a solution with a pH
Trang 860 Buffers combine with hydrogen ions when H+ is in excess or they donate hydroxide ions when H+
Trang 969 is the most abundant compound in living material
70 Carbon dioxide is
A inhaled in large quantities from the environment
B a waste product of metabolic processes
Trang 1078 The building blocks of proteins are amino acids
Trang 11Chapter 02 Test Bank Key
1 All of the food that we eat, liquids that we drink and medications that we take are
2 Understanding is essential for understanding anatomy and physiology
because body structures and functions result from chemical changes
chemistry
Bloom's Level: 2 Understand Learning Outcome: 02.01 Shier - Chapter 02 #2 Topic: Chemistry
3 Chemistry is the branch of science that deals with the composition of matter
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #3 Topic: Chemistry
4 Which of the following substances is not an element?
5 Matter is anything that has weight and takes up space
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #5 Topic: Chemistry
Trang 126 is defined as anything that has weight and takes up space
Matter
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #6 Topic: Chemistry
7 All matter is composed of atoms of fundamental substances called
elements
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #7 Topic: Chemistry
8 All matter is composed of atoms of fundamental substances called
A carbon, hydrogen, oxygen, nitrogen
B carbon, hydrogen, oxygen, calcium
C.carbon, hydrogen, calcium, nitrogen
D.carbon, hydrogen, selenium, sodium
E sodium, calcium, nitrogen, selenium
Bloom's Level: 4 Analyze Learning Outcome: 02.02 Shier - Chapter 02 #8 Topic: Chemistry
9 An element with an atomic number of 6 contains 12 protons
FALSE
Bloom's Level: 4 Analyze Learning Outcome: 02.02 Shier - Chapter 02 #9 Topic: Chemistry
10 At present, there are 90 known naturally occurring _
elements
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #10 Topic: Chemistry
11 Which of the following is the number of elements living organisms require?
Trang 13Shier - Chapter 02 #11 Topic: Chemistry
12 The atomic weight of an atom of an element equals the number of neutrons in its nucleus
FALSE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #12 Topic: Chemistry
13 The atomic _ of an atom of an element equals the number of protons and
neutrons in its nucleus
weight
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #13 Topic: Chemistry
14 The number of protons in the atoms of a particular element is called the element's atomic
15 Each element is composed of characteristic tiny particles called _
atoms
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #15 Topic: Chemistry
16 The parts of an atom that lack an electrical charge are called _
neutrons
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #16 Topic: Chemistry
17 When atoms combine with other atoms, interactions occur between their
Trang 1418 The electrons of an atom occupy one or more areas of space called
19 The electrons in the outermost shell of an atom determine its
20 The atoms of the isotopes of a particular element vary in the number of
21 Sodium and chloride ions readily combine because they have opposite charges
TRUE
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 Topic: Chemistry
Trang 1522 An atom that has gained or lost electrons is called an ion
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #22 Topic: Chemistry
23 Atoms that gain or lose electrons become electrically charged and are called _
24 The type of chemical bond formed when atoms share electrons is called _
covalent
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #24 Topic: Chemistry
25 The first electron shell of an atom can hold a maximum of
26 A covalent bond is formed by two atoms that share electrons
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #26 Topic: Chemistry
27 The molecular formula for compounds like sodium chloride (NaCl) give the relative amounts of
each element present
TRUE
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 Topic: Chemistry
Trang 1628 The formula H2O means
A an atom contains 2 hydrogen molecules and 1 oxygen molecule
B an atom contains 1 hydrogen atom and 2 oxygen molecules
C a molecule contains 2 hydrogen atoms and 1 oxygen atom
D.a molecule contains 1 hydrogen atom and 2 oxygen atoms
E a molecule contains 2 hydrogen atoms and no oxygen atoms
Bloom's Level: 4 Analyze Learning Outcome: 02.02 Shier - Chapter 02 #28 Topic: Chemistry
29 If two pairs of electrons are shared, the resulting bond is called a double covalent bond
TRUE
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #29 Topic: Chemistry
30 The type of chemical bond formed when ions with opposite electrical charges are attracted to
one another is called _
ionic
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #30 Topic: Chemistry
31 The attraction of the positive hydrogen end of a polar molecule to the negative nitrogen or
oxygen end of another polar molecule is called a(an)
32 When two or more atoms bond, they form a new kind of particle called a molecule
TRUE
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #32 Topic: Chemistry
Trang 1733 When atoms of different elements bond, they form molecules called _
compounds
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #33 Topic: Chemistry
34 A molecule of a compound always contains definite kinds and numbers of atoms
TRUE
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 Topic: Chemistry
35 Water is an example of a compound
TRUE
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #35 Topic: Chemistry
36 A molecular formula represents the numbers and types of atoms in a molecule
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #36 Topic: Chemistry
37 A _ formula shows how atoms are joined and arranged in various molecules
structural
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #37 Topic: Chemistry
38 If the bonds of a reactant molecule break so that simpler molecules, atoms or ions form, the
reaction is an exchange reaction
FALSE
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #38 Topic: Chemistry
39 A _ reaction is symbolized as A+B→AB
synthesis
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #39 Topic: Chemistry
Trang 1840 A reaction is symbolized as AB→A+B
decomposition
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #40 Topic: Chemistry
41 A chemical reaction in which pairs of two different molecules trade positions is called a(an)
42 When two or more atoms (reactants) bond to form a more complex structure (product) the
reaction is called synthesis
TRUE
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #42 Topic: Chemistry
43 The opposite of a decomposition reaction is called a reaction
synthesis
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #43 Topic: Chemistry
44 A decomposition reaction can be symbolized as
Trang 1945 A pH value indicates the hydrogen ion concentration in solutions, including body fluids
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #45 Topic: Chemistry
46 pH is a measure of _ ion concentration
hydrogen
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #46 Topic: Chemistry
47 The pH scale ranges from 0 to 14
TRUE
Bloom's Level: 1 Remember
Topic: Chemistry
48 A pH of _ is the midpoint of the pH scale and signifies equal numbers of hydrogen
and hydroxide ions
49 A solution that contains more hydrogen ions than hydroxide ions is _
acidic
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #49 Topic: Chemistry
50 Which term describes a solution that contains more hydroxide ions than hydrogen ions?
E None of the above
Bloom's Level: 4 Analyze Learning Outcome: 02.02 Shier - Chapter 02 #50 Topic: Chemistry
Trang 2051 Each whole number on the pH scale represents a - fold difference in hydrogen ion
52 As hydrogen ion concentration increases, the pH number
53 A solution that has a pH of 6 has ten times the hydrogen ion concentration of a solution with a
54 A substance that releases hydrogen ions in water is a base
FALSE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #54 Topic: Chemistry
55 An is defined as a substance that ionizes in water
electrolyte
Bloom's Level: 1 Remember Learning Outcome: 02.02
Trang 21Shier - Chapter 02 #55 Topic: Chemistry
56 An acid is defined as an electrolyte that releases hydroxide ions (OH-) in water
FALSE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #56 Topic: Chemistry
57 A person has alkalosis if the blood pH
58 As a group, compounds that release ions when they dissolve in water are called
59 Chemicals that resist changes in pH are called
E none of the above
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 #59 Topic: Chemistry
60 Buffers combine with hydrogen ions when H+ is in excess or they donate hydroxide ions when
Trang 22Learning Outcome: 02.02 Shier - Chapter 02 #60 Topic: Chemistry
61 are chemicals that resist changes in pH
Buffers
Bloom's Level: 2 Understand Learning Outcome: 02.02 Shier - Chapter 02 #61 Topic: Chemistry
62 A salt is a compound composed of oppositely charged ions
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.02 Shier - Chapter 02 Topic: Chemistry
63 At the cellular level of organization, biology becomes the study of
64 Which of the following chemicals is not an inorganic substance?
65 Many inorganic substances dissociate in water to release ions
TRUE
Bloom's Level: 2 Understand Learning Outcome: 02.03 Shier - Chapter 02 #65 Topic: Chemistry
Trang 2366 Organic substances always contain the elements hydrogen and _
carbon
Bloom's Level: 1 Remember Learning Outcome: 02.03 Shier - Chapter 02 #66 Topic: Chemistry
67 Inorganic substances that usually dissociate in water are called
68 Water accounts for 2/3 of the weight of an adult human
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.03 Shier - Chapter 02 #68 Topic: Chemistry
69 is the most abundant compound in living material
Water
Bloom's Level: 1 Remember Learning Outcome: 02.03 Shier - Chapter 02 #69 Topic: Chemistry
70 Carbon dioxide is
A inhaled in large quantities from the environment
B a waste product of metabolic processes
71 Cellular organelles use oxygen to release energy from glucose
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.03
Trang 24Shier - Chapter 02 #71 Topic: Chemistry
72 Which of the following is not organic?
73 The different types of carbohydrates do not include
74 The building blocks of fat molecules are amino acids
FALSE
Bloom's Level: 1 Remember Learning Outcome: 02.03 Shier - Chapter 02 #74 Topic: Chemistry
75 are lipids used primarily to store energy for cellular activities
Fats
Bloom's Level: 1 Remember Learning Outcome: 02.03 Shier - Chapter 02 #75 Topic: Chemistry
Trang 2577 Steroid molecules have four connected rings of carbon atoms
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.03 Shier - Chapter 02 Topic: Chemistry
78 The building blocks of proteins are amino acids
TRUE
Bloom's Level: 1 Remember Learning Outcome: 02.03 Shier - Chapter 02 #78 Topic: Chemistry
79 are the building blocks of nucleic acids
Nucleotides
Bloom's Level: 1 Remember Learning Outcome: 02.03 Shier - Chapter 02 #79 Topic: Chemistry
80 Proteins include DNA and RNA
FALSE
Bloom's Level: 2 Understand Learning Outcome: 02.03 Shier - Chapter 02 Topic: Chemistry
Trang 26Chapter 02 Test Bank Summary