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

METAL!!!!!!!!!!!!!. Mr. Fox 8 th Grade Science Class. Music Credit. God Forbid – Force-Fed. What is a Metal?. ( psst : we aren’t talking about the music.) Metals are classed as such based on physical properties. Shiny Malleable – material is one that can be pounded into shape

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

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  1. METAL!!!!!!!!!!!!! Mr. Fox 8th Grade Science Class

  2. Music Credit • God Forbid – Force-Fed

  3. What is a Metal? • (psst: we aren’t talking about the music.) • Metals are classed as such based on physical properties. • Shiny • Malleable – material is one that can be pounded into shape • Ductile – material is one that can be pulled out or drawn, into a long wire.

  4. What is a Metal • Conductor – ability to transmit heat or electricity • Magnetic – attracted to magnets or can be made into magnets • Chemical Properties • Reactivity – how well it reacts with other chemicals • Corrosion – the wearing away of a metal surface as metal oxide flakes off. (ex: rust)

  5. Alloys • 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 =

  6. Alkali Metals • 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

  7. The METAL!

  8. Alkaline Earth Metals • Group 2 on the table • Still reactive enough not to be found as elements in nature. • Properties: fairly hard, bright white, and a good conductor • 2 most common = magnesium and calcium • Magnesium + aluminum = ladders and airplane parts. Light weight and STRONG!

  9. Transition Metals • Groups 3 – 12 • Bridge the highly reactive metals and the less reactive metals. • Very slow to react because they are stable • Hard to tell apart from each other • Hard, Shiny and great conductors • Ex: Gold, Copper, Iron, Silver • Mercury is liquid at room temperature

  10. Metals in Mixed Groups • Groups 13 – 16 • VERY slow to react • Ex: Aluminum, Lead, tin

  11. Lanthanides and Actinides • Rare earth elements • Lanthanides – soft malleable, shiny and HIGH conductivity. • Used in super conductors! • Actinides – Thorium (Th) and Uranium (U) only ones found in earth • All the rest are made in labs!

  12. Homework • Page 92 1 – 3

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