introduction to periodic table

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Introduction to the Periodic Table T- 1-855-694-8886 Email- [email protected] By iTutor.com

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Page 1: Introduction to periodic table

Introduction to the Periodic Table

Introduction to the Periodic Table

T- 1-855-694-8886Email- [email protected]

By iTutor.com

Page 3: Introduction to periodic table

How to Read the Periodic Table

Atomic Number: the number of PROTONS and ELECTRONS in an element

Atomic Weight: the weight of 1 mole of that element

Symbol: abbreviation that represents the element

Element name

Page 4: Introduction to periodic table

12.0107

Carbon

C

6

Atomic Number

Symbol

Element Name

Atomic Weight

Page 5: Introduction to periodic table

Introduction to the Periodic Table

• Each square represents one element

• All information stand for 1 MOLE of that element– All elements are different

Page 6: Introduction to periodic table

Periodic Table• Divided into two main sections: Metals

and Nonmetals• Vertical columns = GROUPS

– There are 18 groups in the periodic table.– Elements have similar properties

• Rows = PERIODS– Chemical and physical properties change A

LOT across periods

Page 7: Introduction to periodic table

Types of Elements• Metals

– An element that is a good conductor of heat and electricity

– Room temperature most are solid– Malleability: the ability to be

hammered into thin sheets– Ductile: ability to be made into wire

Page 8: Introduction to periodic table

Alkali MetalsGroup I of periodic tableVery reactiveUsually silver in appearanceReact violently with water

Ex: Na (sodium) with water…you don’t want to be in the room

Page 9: Introduction to periodic table

Alkali Earth Metals More dense, strong and hardHigh melting pointsToo reactive, are not found in

natureGroup II elementsEx: Magnesium (Mg)

Page 10: Introduction to periodic table

Transition MetalsThese are the “typical” metalsMiddle “chunk” of periodic tableGroups III – XIIEx: Iron (Fe)

Page 11: Introduction to periodic table

Non-MetalsA poor conductor of heat and

electricityGases at room temperatureRemember: there are always

exceptions

Page 12: Introduction to periodic table

Noble GasesConsidered non-metalsGroup 18 of the periodic table.Unreactive elements

Give an example of a noble gas: Neon (Ne)

Page 13: Introduction to periodic table

HalogensMost reactive nonmetalsReacts with metals to form saltsGroup 17Ex: Chlorine (Cl)

Page 14: Introduction to periodic table

MetalloidsAn element that has

characteristics of metals and nonmetals

Solid at room temperatureLess malleable, but not as brittleSemi-conductive for electricity

Page 15: Introduction to periodic table

The End

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