LEC 6: Chemical Bonds

Question 1

tend to lose electrons and form positive ions

Answer 1

metals

Question 2

tend to gain electrons and form negative ions

Answer 2

nonmetals

Question 3

have properties that are intermediate between metals and nonmetals

Answer 3

metalloids

Question 4

energy required to remove an electron from an atom

Answer 4

ionization energy

Question 5

to attain a stable valence electron structure, metals form _____

Answer 5

cations

Question 6

to attain a stable valence electron structure, nonmetals form ____-

Answer 6

anions

Question 7

representation that shows the valence electrons for that atom

Answer 7

lewis structure

Question 8

electrons that occupy the outermost energy level of an atom

Answer 8

valence electrons

Question 9

transfer of electrons from one atom to another

Answer 9

ionic bond

Question 10

ionic bond is the ____ type of chemical bond, which leads to characteristics properties

Answer 10

strongest

Question 11

type of chemical bond wherein there is sharing of electrongs

Answer 11

covalent bonds

Question 12

contains atoms bonded to each other

Answer 12

molecule

Question 13

contains atoms, molecules or ions bonded to each other

Answer 13

lattice

Question 14

relative attraction that an atom has for a pair of shared electrons in a covalent bond

Answer 14

electronegativity

Question 15

identical atoms = _____ sharing of electrons (nonpolar covalent bond)

Answer 15

equal

Question 16

unidentical atoms = ______ sharing of electrons (polar covalent bond)

Answer 16

unequal

Question 17

developed the scale of relative electronegativities

Answer 17

linus pauling

Question 18

_______ have high electronegativities

Answer 18

non metals

Question 19

determined by the difference in electronegativity values of the atoms forming the bond

Answer 19

polarity

Question 20

type of covalent bond that is formed whenever there is an equal share of electrons between atoms

Answer 20

nonpolar covalent bond

Question 21

diatomic elements

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Answer 21

• hydrogen
• nitrogen
• fluorine
• oxygen
• iodine
• chlorine
• bromine

Question 22

the greater the difference in electronegativity, the more _____ the bond

Answer 22

polar

Question 23

type of covalent bond that is formed whenever there is unequal share of electrons

Answer 23

polar covalent bond

Question 24

covalent bonds are more _____ than ionic bonds in organic chemistry

Answer 24

prevalent

Question 25

single covalent bond =

Answer 25

sigma bond

Question 26

double and triple bonds =

Answer 26

pi bonds

Question 27

stable group of atoms that has either a positive or negative charge and behaves as a single unit in many chemical reactions

Answer 27

polyatomic ion