Page 1 of 45
Biology 102 Chapter 2 NEWEST VERSION ALL
QUESTIONS AND CORRECT ANSWERS WITH LATEST
UPDATE JUST RELEASED THIS YEAR
High levels of radiation are NOT used
A)to sterilize medical equipment
B)to kill cancer cells
C)as tracers to detect molecular changes
D)to sterilize from anthrax
as tracers to detect molecular changes
Atoms bonded together to form a chemical unit are called A)molecules
B)ions
C)radioisotopes
D)buffers
molecules
A molecule made of two or more different atoms bonded together is called a(n) A)ion
B)isotope
C)atom
D)compound
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compound
An atom or group of atoms with a charge is called a(n)
A)molecule
B)isotope
C)compound
D)ion
ion
A bond created from the attraction between positively and negatively charged ions is
a(n)______ bond
A)covalent
B)hydrogen
C)ionic
D)metallic
ionic
A bond created from the sharing of electrons between two atoms is a(n)______ bond
A)covalent
B)hydrogen
C)ionic
D)metallic
covalent
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Molecules form from
A)the shape of the individual atoms
B)the attraction between electrons
C)the sharing of electrons
D)a drive toward solubility
the sharing of electrons
When two pairs of electrons are shared between two atoms a ______ bond is formed
A)single covalent
B)double covalent
C)triple covalent
D)double ionic
double covalent
An ion is an atom or molecule that
A)is in a gaseous state
B)carries an electrical charge
C)is attracted to a north-seeking pole
D)forms a visible glow
carries an electrical charge
When one atom has a stronger attraction for shared electrons in a bond than the other
atom,a(n)___________ covalent bond is formed. A)polar
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B)nonpolar
C)ionic
D)metallic
polar
Explain the difference between an ionic bond and a covalent bond
An ionic bond is formed when oppositely charged ions are attracted to one another;a covalent
bond is formed when atoms share electrons.
The attraction between a slightly positive hydrogen to a slightly negative oxygen of another
molecule describes a(n)________ bond. A)hydrogen
B)oxygen
C)nitrogen
D)ionic
hydrogen
Which subatomic particle determines the chemical activity of an atom?
A)Neutron
B)Proton
C)Electron
D)Prion
Electron
Biology 102 Chapter 2 NEWEST VERSION ALL
QUESTIONS AND CORRECT ANSWERS WITH LATEST
UPDATE JUST RELEASED THIS YEAR
High levels of radiation are NOT used
A)to sterilize medical equipment
B)to kill cancer cells
C)as tracers to detect molecular changes
D)to sterilize from anthrax
as tracers to detect molecular changes
Atoms bonded together to form a chemical unit are called A)molecules
B)ions
C)radioisotopes
D)buffers
molecules
A molecule made of two or more different atoms bonded together is called a(n) A)ion
B)isotope
C)atom
D)compound
, Page 2 of 45
compound
An atom or group of atoms with a charge is called a(n)
A)molecule
B)isotope
C)compound
D)ion
ion
A bond created from the attraction between positively and negatively charged ions is
a(n)______ bond
A)covalent
B)hydrogen
C)ionic
D)metallic
ionic
A bond created from the sharing of electrons between two atoms is a(n)______ bond
A)covalent
B)hydrogen
C)ionic
D)metallic
covalent
, Page 3 of 45
Molecules form from
A)the shape of the individual atoms
B)the attraction between electrons
C)the sharing of electrons
D)a drive toward solubility
the sharing of electrons
When two pairs of electrons are shared between two atoms a ______ bond is formed
A)single covalent
B)double covalent
C)triple covalent
D)double ionic
double covalent
An ion is an atom or molecule that
A)is in a gaseous state
B)carries an electrical charge
C)is attracted to a north-seeking pole
D)forms a visible glow
carries an electrical charge
When one atom has a stronger attraction for shared electrons in a bond than the other
atom,a(n)___________ covalent bond is formed. A)polar
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B)nonpolar
C)ionic
D)metallic
polar
Explain the difference between an ionic bond and a covalent bond
An ionic bond is formed when oppositely charged ions are attracted to one another;a covalent
bond is formed when atoms share electrons.
The attraction between a slightly positive hydrogen to a slightly negative oxygen of another
molecule describes a(n)________ bond. A)hydrogen
B)oxygen
C)nitrogen
D)ionic
hydrogen
Which subatomic particle determines the chemical activity of an atom?
A)Neutron
B)Proton
C)Electron
D)Prion
Electron
