unit 5.1

Question 1

what is a chemical bond?

Answer 1

an attraction between nuclei and valence electrons of different atoms that binds the atoms together

Question 2

s+d block

Answer 2

main group metals

Question 3

p block

Answer 3

non metals

Question 4

main group metals

Answer 4

-lose an electron

-become cations (positively charged ions)

Question 5

non metals

Answer 5

-gain electrons

-become anions (negatively charged ions)

Question 6

ionic bonds

Answer 6

the bonding between a cation and an anion (metal and non metal)

Question 7

covalent bonds

Answer 7

bonding between two anions
(sharing of valence electrons between 2 atoms)

Question 8

bond length

Answer 8

def: the distance at which 2 contently bonded atoms minimize their potential energy

unit: picometer (pm)

Question 9

bond energy

Answer 9

def: the energy required to break a bond and form neutral, isolated atoms

unit: kilojoule/mol

Question 10

octet rule:

Answer 10

compounds have 8 valence electrons in their highest occupied energy level