Download The Periodic Table

The Periodic Table
September 3, 2014
• Weekly Sheet
• Objective: I can identify different categories of the
periodic table.
• Starter: On this graph, which is the independent
variable? Which is the dependent variable?
• IV: Age
• DV: Height
• Conclusion: As age increases, height increases
The Origin of the elements
Origins of the Elements Listening Guide
Answer the 13 questions on the listening guide from the video
Carl Sagan, Cosmos
• “The nitrogen in our DNA, the calcium in our teeth, the iron in our
blood, the carbon in our apple pies were made in the interiors of
collapsing stars. We are made of starstuff.”
Important Concepts:
• Groups
• Periods
• Metals
• Alkali Metals
• Alkaline Earth Metals
• Transition Metals
• Nonmetals
• Halogens
• Noble Gases
• Metalloids
The Periodic Table
Groups and Periods
Group: Vertical column (also called a family)
• Elements with similar chemical properties
Period: Horizontal row
• Physical and chemical properties change regularly across a
period
Metals
METAL: an element that is a good conductor of
heat and electricity
Characteristics:
• Shiny (metallic luster)
• Most are solid at room temperature
• Malleable (can be hammered or rolled into
thin sheets)
• Ductile (can be drawn into wire)
• Classifications – alkali metals, alkaline earth
metals, transition metals, other metals
Good Conductor
Nonmetals
NONMETAL: an element that is a poor
conductor of heat and electricity
Characteristics
• Many are gases at room temperature (Ex: N, O,
F, Cl, etc.)
• Many are solids at room temperature (Ex: C, P,
Se, S, I, etc.)
• Solids are brittle (NOT malleable or ductile)
• Classifications – halogens, noble gases, other
nonmetals
Characteristics of Metals
Metalloids
METALLOID: an element that has some characteristics of
metals and some characteristics of nonmetals
Characteristics
• All are solid at room temperature
• Less malleable than metals, but not as brittle as nonmetals
• Also known as semiconductors or semimetals
Noble Gases (Group 18)
• Unreactive
• All are gases at room temperature
Periodic Tables
• Color these seven sections of the table (Remember to make a key so
you know which is which):
•
•
•
•
•
•
•
Alkali Metals
Alkaline Earth Metals
Halogens
Noble Gases
Transition Metals
Non-Metals
Metalloids
Alkali Metals
Alkaline Earth Metals
Halogens
Noble Gases
Transition Metals
Non-Metals
Note: Group 17 elements are all non-metals, but they are called Halogens. These 7
elements are called non-metals because they don’t belong to any other group.
Metalloids