Activity 14,15,16 review

Characteristic Property

A unique property that is the same for a substance regardless of it's size Ex) Density.

Element

A substance that cannot be broken down into simpler substances by heating it or causing it to react with other chemicals.

Know the properties of Alkali metals, Alkaline Earth Metals, Halogens and Noble Gases.

Alkali metals The alkali metals are the elements located in Group IA of the periodic table. The alkali metals are lithium, sodium, potassium, rubidium, cesium, and francium., Alkaline Earth Metals The alkaline earths possess many of the characteristic properties of metals. Alkaline earths have low electron affinities and low electronegativities., Halogens The halogens are located in Group VIIA of the periodic table, and are a particular class of nonmetals. The halogen elements are fluorine, chlorine, bromine, iodine, astatine, and ununseptium. and Noble Gases The noble gases, also known as the inert gases, are located in Group VIII of the periodic table. Group VIII is sometimes called Group O. The noble gases are helium, neon, argon, krypton, xenon, radon, and ununoctium..

Today, is the periodic table arranged by atomic number, or atomic mass?

Atomic Number

Who created the periodic table we use?

Dmitri Mendeleev

The vertical columns are called groups

Each element in a group has the same number of valence electrons and typically behave in a similar manner when bonding with other elements.

The horizontal rows are called periods

Each period indicates the highest energy level the electrons of that element occupies at its ground state.

The element's name

Many periodic tables will include the name to help those who may not remember all the symbols for elements.

Families

The columns on the Periodic table elements in the same family share similar properties.

The element's symbol

Symbols are the abbreviations of the element's name. In some cases, the abbreviation comes from the element's Latin name.

Many periodic tables identify element types using different colors for different element types. These include...

These include the alkali metals , alkaline earths , basic metals, semi metals ,transition metals, nonmetals , lanthanides , actinides , halogens and noble gases .

The element's atomic mass in atomic mass units

This number is a weighted average mass of the element's is otopes The element's name. Many periodic tables will include the name to help those who may not remember all the symbols for elements.

The element's atomic number

This number is the number of protons an atom of this element contains. The number of protons is the deciding factor when distinguishing one element from another.

Physical Properties

color, texture, density, conductivity,miscibility

Chemical Properties

flammability, reaction with acid.

What does "periodic" mean?

relating to the periodic table of the elements or the pattern of chemical properties that underlies it.