Chemistry Coulter

Homework

GIRLS..

REMEMBER YOUR 2 Page Paper on the Manhattan Project.... It needs to be in your own words and hand written. Due TUESDAY.

IONIC BOND

Transfer of electrons

Bond between two oppositely charged ions

NA                         Cl

Metal              Non-metal

OXIDATION

            The loss of an electron

REDUCTION

            Gaining of electrons

OXIDATION NUMBERS

The charge of the atom          

Numbers we use to keep track of electrons, like a book keeping system of what happens to electrons

How would Sodium react to form an ion (metals loose electrons, are oxidized)

            Oxidation Number   +          -1         +2        -3

Oxidation State        Na       F^-         Ca⁺²    PO₄^-3

What is the formula of an ionic compound formed between Mg and P.

            +2                    -3

              Mg                  P

 3                   2

                   Mg₃ P₂

YOU CROSS THE CHARGES

Sodium Sulfide

+1        -2

Na       S

    Na₂S

Sr  F