Groups/Families on the
Periodic Table (PART ONE)
August 15, 2012
Catalyst
• Mystery Elements! Use your periodic table
and the clues below to determine the identity
of 2 mystery elements:
1. This element is located in Group 1 and Period
2 of the periodic table. It is an ingredient in
batteries.
2. This element is located in Group 2 and
Period 7 of the periodic table. It is
radioactive and was discovered in 1898.
Objectives
• I can compare and contrast
properties of metals, nonmetals, and
metalloids (semimetals).
• I can locate metals, nonmetals, and
metalloids (semimetals) in the
Periodic Table.
Agenda
• Catalyst
• Notes: Properties of Metals, Nonmetals, and Semimetals.
• Color coding periodic table
• Unit 1 Quiz – Open Note!
• Article: Where do elements come
from?
Just like you and your family share
similarities… So do elements!
• 3 main groups
1. Metals
2. Non-metals
3. Semi-metals
We will talk about more specific groups
later in the week!
1. METALS
LOCATION on the Periodic Table: To the left, to the
left…
Quic kTime™ and a
dec ompres sor
are needed to see this pic ture.
1. METALS
• Physical properties
–
–
–
–
–
–
–
Solids at room temperature (250C)
Luster (shininess)
Good conductors of heat and electricity
High density (Heavy for its size!)
High melting point
Ductile (thin wire)
Malleable (thin sheets)
QuickTime™ and a
decompressor
are needed to see this picture.
1. METALS
• Chemical properties
– Tend to LOSE electrons when bonding
• form positive ions – ex. K+, Al3+
– Sometimes corrode (disappear slowly by
chemical damage) or rust (reacts with
oxygen)
2. NON-METALS
LOCATION on the Periodic Table: To the right, and
with the exception of Hydrogen!
2. NON-METALS
• Physical properties (tend to be the
opposite of metals)
–
–
–
–
–
–
Mostly gases at room temperature
No luster (dull)
Non-conductors of heat and electricity
Low density
Low melting point
Brittle (breaks easily)
QuickTime™ and a
decompressor
are needed to see this picture.
2. NON-METALS
• Chemical properties
– Tend to GAIN electrons when bonding
3. SEMI-METALS
(Metalloids)
LOCATION on the Periodic Table: the Semi-metal “Staircase”
What are the semi-metals?
B, Si, Ge, As, Sb, Te
3. SEMI-METALS
(Metalloids)
• Tend to have both metallic and nonmetallic physical and chemical
properties.
• For example, a semi-metal may be
shiny like a metal, but cannot
conduct electricity.
Please color-code your periodic
tables.
• The majority of elements are…
METALS
B
Si
Ge As
Sb Te
Unit 1 Quiz: Open Notes!
1. What are isotopes? Give an example.
2. What are ions? Give an example.
3. What part of an atom is the most dense?
(Where is most of its mass?)
4. Write a paragraph explaining the
relationship between atomic structure and
the periodic table. Use these words:
atom, proton, neutron, electron,
nucleus, atomic number, mass number.