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Chapter 3

Chapter 3 . Section 2 & 3 . Dmitri Mendeleev . Russian scientist that arranged the elements in order of increasing atomic mass. . The Modern Periodic Table . Is now arranged by increasing atomic number. Horizontal rows are called PERIOD. G R O U. Vertical rows are called.

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Chapter 3

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  1. Chapter 3 Section 2 & 3

  2. Dmitri Mendeleev Russian scientist that arranged the elements in order of increasing atomic mass.

  3. The Modern Periodic Table • Is now arranged by increasing atomic number

  4. Horizontal rows are called PERIOD. G R O U Vertical rows are called Each group shares the same characteristics.

  5. Physical Properties of Metals • Malleable: material is one that can be hammered or rolled into flat sheets or other shapes • Ductile: material that can be pulled out or drawn into wire • Conductivity: ability to transfer heat or electricity to another object

  6. Pictures to Help Me Remember!! Malleability Conductivity Ductility

  7. Chemical Properties of Metals • Reactivity: the ease and speed at which an elements reacts with other elements or compounds • Corrosion: wearing away of a metal by a chemical change. Turns reddish- brown REACTIVITY This metal car is coated with rust after being exposed to air.

  8. The periodic table consists of metals, non- metals, and metalloids Metalloids are elements that have properties of non- metals and metals

  9. N I T R O G E N H A L O G E N A L K A L I N E E A R T H O X Y G E N N O B L E G A S E S C A R B O N B O R O N A L K A L I TRANSITION METALS L A !!!! LANTHANIDES Metals Metalloids Non- Metals ACTINIDES

  10. BRAIN BREAK Color your periodic table based on it being a metal, non- metal, or a metalloid

  11. Group 1- Alkali Metals • Very reactive • Shiny • Soft Potassium Sodium Lithium

  12. Group 2- Alkali Earth Metals • Hard • Conductor of electricity • Reactive but not as reactive as group 1 Magnesium & Aluminum Calcium

  13. Group 17- Halogens • Very reactive • Both useful and dangerous to humans Bromine & Silver Carbon & Fluorine Chlorine

  14. Group 18- Noble Gases • Unreactive because outer shell has 8 electrons

  15. Lanthanides • Soft • Malleable • Shiny • High conductivity • Used to make alloys • Alloys: mixture of metals

  16. Actinides • Only four occur naturally on Earth • Thorium, Protactinium, Actinium, Uranium • All of the elements heavier than Uranium (U) are artificially made in labs • Unstable

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