Meet The Elements...

The Periodic Table• Elements are a kind of pure substance

• The elements are placed in specific places because of the way they look and act.

Groups

• The columns on the table are arranged top to bottom are called groups or chemical families

• Chemical families of elements often express similar properties, and these properties are more emphasized move down a column..

Metals

Almost 75% of all elements are classified as metals.

In general, metals can be found to the left and central part of the periodic table.

Metals tend to share the following characteristics:Solids at room temperatureShinyMalleableDuctileGood conductors of heat and electricity

Non Metals

Non Metals are found mostly on the far left of the table.

Nonmetals tend to have the following characteristics:DullNon-conductingBrittleMost are liquids for gases at room temperature

Metalloids tend to share the characteristics of metals and non-metals.

How about Metalloids?...

Metalloids are found between the metals and the non-metals, along the staircase.

Metalloids tend to share the characteristics of metals and non-metals.

Each Element

Name and symbol \\

Atomic Number

Atomic Mass

CompoundsPure substances that are made of two or more of these elements are called compounds

eg. Water (Hydrogen and Oxygen)

eg. Salt (Sodium and Chlorine)

Day 2

ALKALI METALS

That elements in the far left column, Group One (Group I), are known as the alkali metals.

The members of the family include: Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs) and Francium (Fr).

The alkali group is: very reactiveshiny and lightweightwill explode when exposed to water

ALKALINE EARTH METALS

That elements in Group Two (Group II), are known as the alkaline earth metals.

The members of the alkaline earth metals include: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra).

The alkaline earth group is: second most reactive metalsshiny found in the Earth's crustused in fireworks

HALOGENS

Group Seventeen (Group VII) is also known as the halogen family.

The elements included are Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At).

The halogen group is: very reactivesolid, liquid and gas bonds with other elements to form halides

NOBLE GASES

Group Eighteen (Group VIII) elements are also known as the noble gases.

The group includes Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).

The noble gases are: very unreactive or inertstable gasesdon't usually form compounds

TRANSITION METALS

Groups 3-12 are known as the transition metals and the rare earth metals.

These groups include elements 21 (Scandium) through 29 (Copper) 39 (Yttrium) through 47 (Silver) 57 (Lanthanum) through 79 (Gold) 89 (Actinium) and all higher numbers.

These transition metal elements are ductile, malleable and conduct heat.

RARE EARTH METALS

There are two rows under the table. These are called the Lanthanide and Actinide series or rare earth metals.

The Lanthanide elements are all found naturally on Earth

The Actinide elements are all synthetic or man-made and radioactive.