Diversity of matter and chemical bonding

Question 1

Why do bonds form

Answer 1

Because of the negative and positively charged electrons and their attractions with each other to form octets.

Question 2

Electronegativity

Answer 2

ability to attract a bonding pair of electrons

Question 3

Types of bonds

Answer 3

Non polar covalent: 2 non metals, 0 difference in ev
Polar covalent: 2 non metals, 0-1.7 difference in ev
Ionic: 1 metal, 1 non metal, large difference in ev

Question 4

Ionic bond is the result of what force

Answer 4

intramolecular

Question 5

Ionic bonds must have what charge

Answer 5

Neutral. =0

Question 6

The crystal lattice is formed from smaller repeating patterns knowns as

Answer 6

Unit cells

Question 7

Factors that influence shape of crystal lattice

Answer 7

Size of ions and ratio of cations to anions

Question 8

Properties of ionic compounds

Answer 8

Solid at room temp and pressure, forms crystal lattice, brittle, conducts electricity when MOLTEN OR AQUEOUS (ELECTROLYTES)

Question 9

Difference between molecular and ionic formulas

Answer 9

molecular represents actual amount of individual elements in the molecule instead of ratio of cations to anions.

Question 10

Covalent bond

Answer 10

MOLECULAR bond where electrons are shared

Question 11

What metal breaks octet rules

Answer 11

Beryllium forms covalent bonds and is stable with 4 valence electrons

Question 12

SYMETRICAL SHAPES FOR NON POLARITY

Answer 12

tetrahedral, planar, linear TRI

Question 13

NON SYMMETRICAL SHAPES FOR POLARITY

Answer 13

pyramidal, bent (V), and linear DI