Non-polar and polar molecules

Question 1

a 100% covalent bond has two (or more)…………….electronegative atoms

Answer 1

identically electronegative, such as Cl2

Question 2

a 100% ionic bond has two (or more)………………………electronegative atoms

Answer 2

very differently electronegative, such as LiF

Question 3

in covalent bonds, electrons move and can ……….towards the more……………..element

Answer 3

drift towards the more electronegative element

Question 4

when electrons in a covalent bond drift towards the more electronegative element, this results in a

Answer 4

separation of charge called a dipole

Question 5

a dipole is said to exist when

Answer 5

two charges of equal magnitude but opposite signs are seprated by a small distance

Question 6

each of the bonds in a molecule has its own

Answer 6

dipole associated with it

Question 7

the overall dipole of a molecule depends on its

Answer 7

shape

Question 8

depending on the relative angles of between the bonds, the individual dipoles can either…….or………..

Answer 8

reinforce one another or cancel out each other

Question 9

if the cancellation is complete, the resulting molecule is

Answer 9

non-polar

Question 10

if the dipoles reinforce one another, the molecule will be

Answer 10

polar

Question 11

hydrogen and chlorine are examples of molecules that are

Answer 11

non-polar

Question 12

the symbol δ indicates

Answer 12

the partial charge of an atom

Question 13

the symbol for a dipole is

Answer 13

a horizontal arrow showing the direction of electronegative charge, with a vertical line through it