Elements and

Periodic Table

SC.8.P.8.6 Recognize

that elements are

grouped in the periodic

table according to

similarities of their

properties.

Obj

ectiv

es

• Analyze and explain how elements are grouped in the periodic table according to similarities of their properties.

BELL

RING

ER

ELEM

ENTS

An element is a pure substance which cannot be split up into two or more simpler substances by chemical means.

H2

HydrogenAll Nitrogen atoms are identical. Lots of them make up the element Nitrogen!

Note that an element: Consists of only one kind of atom. Cannot be broken down into a

simpler type of matter by either physical or chemical means.

Can exist as either atoms (e.g. argon) or molecules (e.g. nitrogen).

Elements

Examples of Elements

Is the smallest particle of an element and has

the same chemical propertiesof the element

Is made up of two or moreatoms that are chemically

bonded together(note: these atoms are of the

SAME element!!)

1 Hydrogen molecule

(H2)1 Hydrogen

atom(H)

Atoms of the element Argon

Microscopic view :of the atoms of the element argon (Ar) (gas phase).

Consists of only one kind

of atom

Molecules of the element Nitrogen

Microscopic view of the molecules of the element nitrogen

(gas phase).

Consists of only one kind of atom

There are 118 elements on earth!

What a mess!

Don’t worry, somebody took the time to find a pattern and organize them!

Guided notes: Have your black and white periodic table ready to highlight, color, circle or underline, when instructed!

Let’s find out more about the Periodic Table!

On your left side

and columns called _____________.

The periodic table is made up of rows called ________________,

Let’s check!-Right side According to their _____________ and _____________ (appearance and behavior), elements are classified as ______________, ______________, and ___________.Most elements are _________, they are located on the ____________ side. ___________ are on the _____________!

Elements with ___________ chemical ___________ are located in the same column or group!

periods

metals

Nonmetalsright

propertiessimilar

groups or families

left

physicalchemical properties

metalsnonmetals

metalloids

Let’s see some properties of the Elements!

Class discussion: Why is it important to know the location of elements in the periodic table? We have only

5 min to come up with a

meaningful answer…

The properties of an element can be predicted from its location in the periodic table!

And, if I study the chemical and

physical properties of elements then I

can learn more about their uses

and interactions with other materials

Magnesium

What am I?

Find out my properties and then classify

me!Where am I on the periodic table?Which group___Metal?___ Nonmetal?___Metalloid?____What other elements are similar to me____ _____ _____ _____ _____

On your own now!

2

BaSr

Be CaRa

Where am I on the periodic table?Which group___Metal?___ Nonmetal?___Metalloid?____What other elements are similar to me____ _____ _____ _____ _____

Where am I on the periodic table?Which group___Metal?___ Nonmetal?___Metalloid?____What other elements are similar to me____ _____ _____ _____ _____

Exit

ticke

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