Chemical formulas and Chemical compounds

formulas

100

Potassium and Iodine

KI

200

Magnesium and Chlorine 

MgCl₂

300

Sodium and Sulfur

Na₂S

400

Aluminum and Nitrogen

AlN

500

Aluminum and Sulfur

Al₂S₃

definitions

100

Molecular Compound

the chemical formula reveals the number of atoms of each element contained in a single molecule of the compound.

200

Ionic Compound 

represents the simplest ratio of the compound's positive ions and negative ions

300

Monatomic ions

ions formed from a single atom

400

Binary Compounds

Compounds composed of two elements

500

Crossing over 

is a method of balancing the charges between ions in an ionic compound.

definitions cont.

100

oxidation number

+ or - number that shows electrons gained or lost

200

polar covalent bonds

unequal sharing of electrons in overall neutral molecule

300

non polar covalent

equal sharing of charged particles 

400

chemical formula

shows the element in a compound that contains exact number of atoms of each element

500

oxidation number of groups 1 and 2

+1 nd +2

Crossing over

100

Al²O³

Al₃O₂

200

Zn²I¹

Zn₁I₂

300

Zn²S²

Zn₂S₂

400

Mg²Br¹

Mg₁Br₂

500

Zn²O³

Zn₃O₂

Name formulas

100

AgCl

silver chloride

200

ZnO

zinc oxide

300

CaBr₂

calcium bromide

400

SrF₂

Strotium fluoride

500

BaO

Barium oxide