HC Periodic Table.notebook

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October 21, 2011

Sep 20­8:58 AM

Shiny Malleable Conductive Reactive

Dull Brittle Not Conductive Unreactive

Classifying Elements Lab

Sep 22­11:27 AM

The Periodic Table

HC Periodic Table.notebook

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October 21, 2011

Sep 22­6:57 PM

Periodic Table HistoryDmitri Mendeleev, Russian Chemist -

The Periodic Law -

Developed the version of the periodic table that we use today.

The elements in the modern periodic table are arranged such that chemical & physical properties recur periodically as the atomic numbers increase.

Sep 19­7:50 AM

Mendeleev's TableArranged in order to increasing atomic weight.

How is the table arranged today??Q:

HC Periodic Table.notebook

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October 21, 2011

Sep 19­8:57 AM

Examples of some other periodic tables...

How is this periodic table arranged?

By atomic number.

Sep 19­8:57 AM

The Clark Periodic Table

How is this one arranged?

by atomic number

HC Periodic Table.notebook

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October 21, 2011

Sep 19­8:57 AM

The Physicist's Periodic Table

How is the one arranged?• By the highest energy level in the ground state• By the last type (s, p, d or f) of orbital filled

Sep 19­9:46 AM

The Spiral Periodic Table

How is this table arranged?In a spiral pattern according to atomic number.

HC Periodic Table.notebook

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October 21, 2011

Sep 22­6:57 PM

Metals, Non-Metals, Metalloids

Metals

Non-Metals

Metalloids

Sep 22­6:57 PM

Definitions...Metals -

Non-Metals -

Metalloids -

• Metals are to the left of the metal/non-metal line.• Non-metals are to the right of the metal/non-metal line .• Metalloids are along the metal/non-metal line; B, Si, Ge, As, Sb, Te, Po, At

shiny, malleable, conductive & reactive with acid

dull, brittle, not conductive or reactive

share properties of both metals and non-metals

HC Periodic Table.notebook

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October 21, 2011

Sep 22­11:49 AM

Parts of the Table...Periods:

Groups/Families:

The rows (left to right) on the periodic table. They are identified by a number...period 1 (first row), period 2 (second row), etc...

The columns (top to bottom) on the periodic table. Elements in the same group share chemical and physical properties. Some groups have specific names.

Periods

Groups

Sep 14­12:49 PM

Group Names...

Alkali Metals

Alkaline EarthMetals

Transition Metals

Halogens

Noble Gases

Lanthanides

Actinides

All by itself

HC Periodic Table.notebook

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October 21, 2011

Sep 22­6:57 PM

Valence Electrons & The Periodic Table:• electrons found in the highest energy level of an atom• these electrons are lost or gained when an ion forms

• elements in the same group (except for the transition metals) have the same number of valence electrons

• therefore, elements in the same group (except for the transition metals) lose or gain the same number of electrons when they form ions

• you can tell the number of valence electrons and what charge certain elements will have as ions based on their location in the table

Sep 14­1:32 PM

Number of Valence Electrons

HC Periodic Table.notebook

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October 21, 2011

Sep 14­1:36 PM

metals lose electrons (positive charges)non-metals gain electrons (negative charges)

Ion Charges:

Sep 22­6:57 PM

A Few Extra Notes...Physical State - state (s, l, g) at room temperature (25oC)

mp/bp -

Black - solid Blue - liquid Red - gasOutlined - man made

Example 1 - Which two halogens have the highest boiling point?

Example 2 - Which metal has the lowest melting point?

HC Periodic Table.notebook

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October 21, 2011

Sep 22­6:57 PM

• Radioactivity - elements with atomic number 84 (Po) or greater are highly radioactive• Reactivity Trend -

metals: decreased reactivity across a period increased reactivity down a group

non-metals: increased reactivity across a period decreased reactivity down a group• Allotrope - different forms of the same element example - 3 allotropes of oxygen, O - free radical, unstable O2 - colorless gas O3 - ozone, blue colored gas

Sep 20­2:58 PM

Homework:pgs. ____________

in the packet