The Periodic TableThe Periodic Table

TEKS 8.5C interpret the arrangement of the TEKS 8.5C interpret the arrangement of the Periodic Table, including groups and periods, Periodic Table, including groups and periods, to explain how properties are used to classify to explain how properties are used to classify elementselements

TEKS 8.5B identify that protons determine an TEKS 8.5B identify that protons determine an element’s identity and valence electrons element’s identity and valence electrons determine its chemical properties, including determine its chemical properties, including reactivityreactivity

Video

The periodic table was The periodic table was created by Russian created by Russian chemist, chemist, Dmitri Dmitri MendeleevMendeleev..

Mendeleev Song

ElementsElements are are represented with represented with chemical symbolschemical symbols..

Si Na

Fe

OC

He NEW Element Song

Elements are arranged Elements are arranged

from left to right based from left to right based

on their on their atomic numberatomic number..

The The atomic atomic number number is the is the

number of number of ((positive)positive) protonsprotons

present in present in stable atoms. stable atoms. P = E

ProtonsProtons determine determine the element’s the element’s

identityidentity!!!!

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Here is the Here is the structure of the structure of the Periodic Table…Periodic Table…

ColumnsColumns

The The columnscolumns on on the Table are the Table are called called groupsgroups. .

The groups areThe groups arenumbered from numbered from 1-1-1818. .

Elements in the Elements in the same group same group have very have very similarsimilar properties and properties and react the samereact the same..

*Highlight this.*Highlight this.

Columns go Columns go verticalvertical..

The The rowsrows on on the Table are the Table are

called called PeriodsPeriods. .

Properties of elements gradually change as you go

from left to right.

Going from left to right atoms

• smaller in size• larger in mass

HORIZONTALHORIZONTALPeriods go……

Elements are Elements are classified into classified into threethree large groups.large groups.

Major Groups

MetalsMetals

MetalloidsMetalloids

NonmetalsNonmetals

Color the three groups on your Color the three groups on your Periodic Table and make a Periodic Table and make a

key. key.

MetalsMetals == blueblue NonmetalsNonmetals== greengreen MetalloidsMetalloids == yellowyellow