Lewis dot structute
Lewis dot structute
LEWIS DOT STRUCTURE:



-The octet rule is used to describe the attraction of elements, to achieve having eight valence shell electrons in their outer shell. Because a full outer shell with eight electrons is relatively stable, many atoms lose or gain electrons to obtain an electron configuration like that of the nearest noble gas. (have filled shells.)

http://science.jrank.org/pages/4844/Octet-Rule.html#ixzz0mG2Cn6

VOCABULARY

Reactant : Compound that experiences the change in a chemical reaction.

Reagent: A common partner to reactant. It may be gas, liquid or solid. The portion of a reagent that ends up in the product may range from all to very little or none.

Product(s):The final form taken by the major reactant(s) of a reaction.

Reaction Conditions: Environmental conditions; temp, pressure, catalysts & solvent, under which a reaction progresses is best.
Catalysts: are substances that accelerate the rate of a chemical reaction without themselves being part of the reaction product. (They DO NOT change equilibrium positions)
Chemical reactions can be written as equations
REACTANT=REAGENTS/REACTION CONDITION=PRODUCT



Chemical Reactivity top 3 RULES-
· Metal atoms typically transfer electrons to nonmetals when they react.
· Nonmetal atoms tend to gain or share electrons when they react.
· When determining which metal or nonmetal is more reactive, you can compare elements within groups or periods
In the same period: the number of electrons is what determines reactivity. The smaller the number of electrons transferred between reacting atoms, the more of a reaction you get.
In the same group: elements have the same number of outer shell electrons and their atomic radius largely determines reactivity. It is easier for the larger metals to loose outer shell electrons than it is for the smaller nonmetals (whose attraction for electrons by the nucleus is greater) are more likely to take electrons away from other metals or share with other nonmetals.
GAMES/QUESTIONS


Scrambble
1. Compound that experiences the change in a chemical reaction:
tanrteac
2. Knowing the octet rule you can draw this diagram:
todewisl
3. In the same group elements have the same number of :outer shell:
snoctrlee
4. Substances that accelerate the rate of a chemical reaction:
Tactsyla
5. These elements have filled shells:
Sesag elbon

(Chemical reactivity, octet rules, valence electron relationship, reactivity)
Chemical Reaction: A transformation that results in a change of composition, constitution and/or configuration of their inner atoms structures.
Chemical reactions would not be possible without the octet rule!!
THE OCTET RULE
: Atoms tend to gain, lose or share electrons so as to have eight electrons in their outer electron shell.
The octet rule helps predict
· placement of electrons around nucleus (electron orbital’s),
· the identification of electrons added or lost during chemical reactions
· chemical reactivity of atoms (individual electron configuration).

The octet rule is used when drawing Lewis dot diagram and drawing electron configurations.


OCTET RUEL- Refers to the principle that bonded atoms share their eight outer electrons. The octet rule is a 'rule' that is sometimes broken. ( atoms with 8 electrons in their outer shell are stable,BUT applies up to period 4, THEN it takes 18 electrons to fill the outer orbitals.AND 32 electrons are required to fill the outer orbitals of electrons from period 6.