Metals Lesson

Metals: Alkali Metals, Alkaline Earth Metals and Transition Metals

REVIEW

Metals

• Metals are located on the left side of Periodic table. All elements highlighted with blue are metals.

• Shiny -Metallic Luster and Malleable (can be shaped)

• Ductile (Able to stretch into wire) and Good conductors of heat and electricity

• Solid at room temperature except mercury. An Example: Gold

Metals

• Almost all elements on the left side and middle of the table

• Majority (75%) of the elements are metals

• Examples: Magnesium, Calcium, Copper, Silver, Gold, Nickle

• There are different types of metals, but for now we will focus on it as a general group

Physical Properties of Metals

• Luster - Shines, reflects light

• Great Conductivity - How well electricity and heat travels through the element

• Malleable - Can be beaten into different shapes without breaking

• Ductile - Turned into wires

• Solid at room temperature - Except for Mercury

​Ductile means metals can be stretched to wire but keeps its toughness. This is electricity cable very strong. Think of a metal Chain. Very tough, wont break easily.

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​Metals are on the left side of the Zig Zag line and bottom of the Periodic table. The ones in green. Non Metals are on the far right the ones on yellow. and metalloids are along Zig Zag line the ones on blue.

Properties of Metals

• Malleable-Can be shaped and does not break easily.

• Ductile-Can be pulled into long sheets of metal or wire.

• Thermal Conductivity-Allows heat to pass easily-Example Pans.

• Electrical Conductivity-Allows the easy flow of electric current.

Physical Properties of Metals

• Lustrous-Shiny to the eye.

• Opaque-Dose not allow ligh to pass through.

• High Melting Points (with some expectations).

How are Metals identified

• Alkali Metals Group 1

• Alkaline Earth Metals Group 2

• Transition Metals Group 3-12

Alkali Metals

• Shiny

• Soft

• Extremley Reactive

• One Valence Electron able to give up to another element.

Alkaline Earth Metals

1.Very Shiny

2.Hard, more Dense

Less Reactive

3.Give up 2 Valence Electrons.

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Reactive Trends Periods of the Periodic Table

Electrons are used to bond atoms together. Group one will share with group 2.