2.3 covalent bonds

Question 1

the sharing of a pair of valence electrons by 2 atoms:

Answer 1

covalent bond

Question 2

2 or more atoms held together by covalent bonds:

Answer 2

molecule

Question 3

one line represents a ____ bond

Answer 3

single

Question 4

a pair of shared electrons:

Answer 4

single bond

Question 5

notation of symbols of elements and lines (to show bonds) representing both atoms and bonds:

Answer 5

structural formula

Question 6

what’s this notation

Answer 6

molecular formula

Question 7

the number of unpaired electrons required to complete the atom’s valence shell:

Question 8

what is the valence of hydrogen

Answer 8

1 -because it needs 1 electron to fill valence shell

Question 9

the attraction of aparticular kind of atom for the electrons of a covalent bond:

Answer 9

electronegativity

Question 10

the more electronegative an atom is, the _____it pulls shared electrons toward itself

Question 11

when there is equal electronegativity bond

Question 12

where electronegativity is unequal

Answer 12

polar covalent bond

Question 13

in a polar covalent bond, a partial positve charge is symbolized by

Answer 13

delta +

∂+

Question 14

in a polar covalent bond, a partial negative charge is symbolized by