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?

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?

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

Mapping the Periodic TableMetals

• Most elements are metals. • 88 elements found to the

LEFT of the Zigzag Line•

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)

Chemical Properties of Metals

• Easily lose electrons (positive ions CATIONS)• Corrode easily

•React easily with other elements

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

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

ALKALI METALS – GROUP 1, 1A & IA• Lithium Li Sodium Na Potassium K

• Rubidium Rb Cesium Cs Francium Fr

Extremely Rare

Radioactive

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

              

          

Alkaline Earth Metals Group 2 2A & IIA• Beryllium Be Magnesium Mg Calcium

Ca

• Strontium Sr • Barium Ba

Strontium Sr Radium Ra

              

           

     

          

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

Iron Cobalt and Nickel Group 8 9 & 10

•Iron Triad•Steel•Fe

• most widely used metal• 2nd most abundant in the earth’s crust

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

Flash Card

• On the front write:

•Luster

• On the back write:

• Shineness

Flash Card

• On the front write:

•Malleable

• On the back write:

• Ability to be hammered and re-shaped

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

Quia.com

• User name: firstlast515• Password: password

• Click on class website • Click on periodic table • Click on play game

Coinage Metals • Copper Silver and Gold Group 11

• Coinage metals• Cu - wiring• Ag – photographs

Group 12

• Zinc Cadmium and Mercury •Coat or Plate metals •Batteries•Thermometers

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

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

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.

Representative Elements in: Number of Valence Electrons

Group IA all elements have 1 valence electron

Group IIA all elements have 2 valence electrons

Group IIIA all elements have 3 valence electrons

Group IVA all elements have 4 valence electrons

Group VA all elements have 5 valence electrons

Group VIA all elements have 6 valence electrons

Group VIIA all elements have 7 valence electrons

Group VIIIA all elements have 8 valence electrons

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.

Lewis Dot Diagrams

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