&The chemical bondTHE PERIODIC TABLE

Carbon (C), Hydrogen (H), Oxygen (O) & Nytrogen (N).Represents the 96% of the composition of the human body.Fluorine (F), chlorine (Cl), bromine (Br) and iodine (I).Fluorine is the most electronegativity element of the periodic table.lanthanides and actinides.Noble gases like Helium (He), Neon (Ne), Argon (Ar)etc.

Calcium (Ca), Phosphorus (P), Potassium (K), Sulfur (S), Sodium (Na), Magnesium (Mg), Boron (B), Chromium (Cr),, Manganese (Mn), Selenium (Se), Iron (Fe), Silicon (Si), etc.

PRONOUNCE CORRECTLY THE FOLLOWING ELEMENTS

Sodium cation.Calcium cation.Fluoride, chloride, bromide and iodide anions.Hydride anion.Selenide anion.

PRONOUNCE CORRECTLY THE FOLLOWING CATIONS AND ANIONS

Explain the type of chemical bond that is formed and its characteristics:

Na y ClCOMBINING THE FOLLOWING ELEMENTS TOGETHER WE GET

Ionic compound (crystalline solid):High melting and boiling points.Soluble in polar solvents (like water).The common salt (NaCl) dont conduct electricity in solid state, but it does when it is melted or dissolved.Ionic compounds are hard, but fragile or brittle.

Metal + NonmetalNACL

Explain the type of chemical bond that is formed and its characteristics:

N y HCOMBINING THE FOLLOWING ELEMENTS TOGETHER WE GET

Covalent compound (molecular compound):Low melting and boiling points (weak intermolecular forces).Strong intramolecular forces.Soluble in polar solvents (like water).Ammonia doesnt conduct electricity, even dissolved in water.

Many covalent compounds are insoluble in polar solvents, because most of molecular compounds are non-polar molecules.

Nonmetal + Nonmetal

NH3

Explain the type of chemical bond that is formed and its characteristics:

Si y OCOMBINING THE FOLLOWING ELEMENTS TOGETHER WE GET

Covalent crystalline solid:Really high melting and boiling points.Insoluble in all solvents.This kind of crystalline structures dont conduct electricity.

Covalent crystalline solids are the hardest materials in the world.

Nonmetal + NonmetalQUARTZ

Explain the type of chemical bond that is formed and its characteristics:

Au y CuCOMBINING THE FOLLOWING ELEMENTS TOGETHER WE GET

Metallic compound (a metal):High melting and boiling points.Good heat and electricity conductors.Ability to be deformed plastically (without breaking): Ductile (can be molded as thin wires) Malleable (can be molded as thin films).High density solids (the metallic crystal is a really ordered and compact structure).

Generally metals have a wide variation in their melting and boiling poinst, as well as in their densities.

Metal + MetalCOPPER AND GOLD ALLOY

RememberAtomic models.Valence electrons.Cations and anions.Atomic number and mass number.Electronic configuration.The periodic table.The chemical bond.

I hope you enjoyed!THE END