scie 3 1st

chemical bond

is defined as attractive force that exist between atoms or group of atoms

covalent bond

that attraction between two atoms sharing a pair of electron

octet rule

in order for an atom to attain stability it must acquire a total of eight electron

lewis electron dot structure LEDS

special symbol developed by gilbert lewis

valence electron

the dots around the symbol represent the

bonding electron or shared electron

dot between the symbol represent the

non bonding electron

the other dot represent

water h2o molecule

forms when oxygen atom and 2 hydrogen atom shared electrons

atom

cobine together to stability

lewis structure

compose of the symbols of the dots

ionic bond

is formed when a metallic elements transfer its valence electron to a nonmetallic element

ion

is formed whenever an uncharged atom gains or loses electron

ionic compound

a subtance that is formed through ionic bonding is

covalent bond

formed by the sharing electron between non metals

polar and non polar

two types of covalent

non polar covalent bond

is formed when electrons are equally shared between two non metals

polar covalent bond

s formed when electrons are unequally shared between two non metal

single dash

the presence of single bond is

double covalent bond

sharing of two pairs electron

triple bond

sharing of three pairs electron

metals

are good conductors of heat and electricity

metallic bonding

can be described of sea electron

free electron

these positive metal are surrounded by sea of delocalized electron

Cl ionic bond

sodium chlorine

MG O ionic bond

magnesium oxide

Kl ionic bond

potassium oxide

Ca Se ionic bond

calcium selenium

C O covalent bond

carbon monoxide

liz o covalent bond

lithium oxide

NH3 covalent bond

ammonia

CH6 covalent

methane

H2O covalent

water

CO2 covalent

carbondioxide