Mr. Fox 8th

Grade Science Class

METAL!!!!!!!!!!!!!

God Forbid – Force-Fed

Music Credit

(psst: we aren’t talking about the music.) Metals are classed as such based on physical

properties.ShinyMalleable – material is one that can be

pounded into shapeDuctile – material is one that can be pulled out

or drawn, into a long wire.

What is a Metal?

Conductor – ability to transmit heat or electricity

Magnetic – attracted to magnets or can be made into magnets

Chemical PropertiesReactivity – how well it reacts with other

chemicalsCorrosion – the wearing away of a metal surface as

metal oxide flakes off. (ex: rust)

What is a Metal

A mixture of metals to make them stronger and more durable. Ex: Copper + Tin = Ex: Copper + Zinc = Ex: Iron + Carbon = Ex: Iron + Carbon + Chromium + Vanadium =

Alloys

Group 1 on the periodic table (Mr. Fox’s Favorite)

Never found as elements in nature because they react REALLY fast.

Very soft and shiny. (can cut them with a plastic knife)

Sodium and potassium essential for life!React violently in WATER! 1 valence electron

Alkali Metals

The METAL!

Group 2 on the tableStill reactive enough not to be found as

elements in nature. Properties: fairly hard, bright white, and a

good conductor2 most common = magnesium and calciumMagnesium + aluminum = ladders and

airplane parts. Light weight and STRONG!

Alkaline Earth Metals

Groups 3 – 12Bridge the highly reactive metals and the less

reactive metals. Very slow to react because they are stableHard to tell apart from each otherHard, Shiny and great conductorsEx: Gold, Copper, Iron, SilverMercury is liquid at room temperature

Transition Metals

Groups 13 – 16VERY slow to reactEx: Aluminum, Lead, tin

Metals in Mixed Groups

Rare earth elements Lanthanides – soft malleable, shiny and HIGH

conductivity.Used in super conductors!

Actinides – Thorium (Th) and Uranium (U) only ones found in earthAll the rest are made in labs!

Lanthanides and Actinides

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Homework