Warm-Up 2/25/11

2. Warm-Up 2/25/11 • What do you know question: What do you know about where metals in the periodic table are located? • Teach the teacher questions: So far what has been your favorite activity and what has been your least fave?

3. Warm-up 3/1/11 • Review: Looking at your periodic table, tell me everything you know about neon? • Teach the Teacher: If you could be an animal, what animal would you be?

4. American Indian Chemistry Contributions to the world • What is the contribution? (ex: gold panning or antibiotics) (bigger font) • How it is used/made, or what it is? • What tribe or region used/discovered it? • Another interesting fact • Add a picture • Contributions: gold plating, antiasthmatic medication, diabetes medication, anesthetics

5. Mapping the Periodic TableMetals • Most elements are metals. • 88 elements found to the LEFT of the Zigzag Line

6. Physical Properties Of Metals • Luster (shininess) • Good conductors of heat and electricity • High density (heavy for their size) • High melting point • Ductile (drawn out into thin wires) • Malleable (hammered into thin sheets)

7. Chemical Properties of Metals • Easily lose electrons (positive ions CATIONS) • Corrode easily • React easily with other elements

8. Metals • First metal used was gold – 6000 years ago • Followed by Cu Ag Sn Fe • Al was not refined until 1800’s • Hg mercury is the only metal that is a liquid at room temp

9. ALKALI METALS – GROUP 1, 1A & IA • Soft metals – they can be cut with a knife • Most reactive of all the metals - React rapidly with oxygen and water • Do not occur in nature in their elemental form • Stored under oil • Will form a +1 ion by giving away their one valence electron

10. ALKALI METALS – GROUP 1, 1A & IA • Lithium Li Sodium Na Potassium K • Rubidium Rb Cesium Cs Francium Fr Extremely Rare Radioactive

11. Alkaline Earth Metals Group 2 2A & IIA • Do not occur in nature in their elemental form • Will form a +2 ion by giving away their two valence electrons • Uses • Fireworks • Ca – Bones & Teeth • Ba - X-Rays

12. Alkaline Earth Metals Group 2 2A & IIA • Beryllium Be Magnesium Mg Calcium Ca • Strontium Sr • Barium Ba Strontium SrRadium Ra

13. Transition Elements Group 3-12 • These elements are most familiar to the public because they are found in nature in their elemental form • Often form colored compounds • Chromium precious gems (emeralds and rubies) • Cadmium yellow • Cobalt blue

14. Iron Cobalt and Nickel Group 8 9 & 10 • Iron Triad • Steel • Fe • most widely used metal • 2nd most abundant in the earth’s crust

15. Warm-up 3/2/11 • Review questions: Tell me as many physical characteristics of metals as you can remember (or use your notes). • Teach the teacher questions: Best pair of shoes that you have ever owned. • Learning Targets: What metalloids are. • Identify valence electrons on periodic table • Identify where non-metals are

16. Flash Card • On the front write: • Luster • On the back write: • Shineness

17. Flash Card • On the front write: • Malleable • On the back write: • Ability to be hammered and re-shaped

18. American Indian Chemistry Contributions to the world • What is the contribution? (ex: gold panning or antibiotics) (bigger font) • How it is used/made, or what it is? • What tribe or region used/discovered it? • Another interesting fact • Add a picture • Contributions: gold plating, antiasthmatic medication, diabetes medication, anesthetics

19. Quia.com • User name: firstlast515 • Password: password • Click on class website • Click on periodic table • Click on play game

20. Coinage Metals • Copper Silver and Gold Group 11 • Coinage metals • Cu - wiring • Ag – photographs

21. Group 12 • Zinc Cadmium and Mercury • Coat or Plate metals • Batteries • Thermometers

22. INNER Transition Metals • Lanthanides • Elements 58 – 71 • Elements used in motion pictures industry • Produce colors you see on the TV • Actinides • Elements 90 – 103 • All actinides are radioactive and unstable • Thorium and Uranium are found in the earth’s crust • Uranium – nuclear reactors

23. NONMETALS • Found to the RIGHT of the zigzag line • Hydrogen is considered a nonmetal • Group 18 – Noble Gasses are the only group that consists of all nonmetals • Group 17 - Halogens • Properties • Nonmetals gain electrons to become stable – anions • Most are gasses at room temp • Not malleable • Not ductile • Poor conductors of heat and electricity • No Luster – Dull • Important nonmetals in Humans • Carbon Hydrogen Nitrogen & Oxygen

24. Metalloids & Synthetic Elements • Metalloids conduct electricity better than nonmetals, but not as well as metals. • Synthetic elements do not occur naturally (they are man-made) • All elements with an atomic number higher than uranium (92) were made by scientists and most are radioactive.

25. Lewis Dot Diagrams The Lewis electron-dot diagrams focus on the electrons in the highest energy level in the atom, the valence electrons. Valence electrons are the electrons that participate in chemical reactions.

26. Lewis Dot Diagrams of Selected Elements • Lewis Dot uses the symbol of the element and dots to illustrate the number of electrons in the outermost energy level • Dots are placed in 8 positions around the symbol • 2 spots for each Right Left Top & Bottom • Elements of the same group (column) have the same number of valence electrons