Chapter 4
Section 2 Tour of the Periodic Table
Cycle 5 Chemistry I Lesson 5
Metals, Nonmetals, and Metalloids
AGENDA
Vocab: “Metal”, “Alloy”, “Nonmetal”, “Metalloid”
Classwork:
Metals, Nonmetals, and Metalloids WS
Mystery Element WS
Chapter menu
Resources
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Chapter 4
Section 2 Tour of the Periodic Table
Most Elements Are Metals
The regions highlighted in blue indicate the elements that
are metals.
Chapter menu
Resources
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Chapter 4
Section 2 Tour of the Periodic Table
Most Elements Are Metals
• Metals are conductors of heat and electricity, often
shiny in appearance.
• Metals often react with acids to form salts.
• Some metals, such as manganese, are brittle. Other
metals, such as gold and copper, are ductile and
malleable.
• Ductile means that the metal can be squeezed out
into a wire.
• Malleable means that the metal can be hammered
or rolled into sheets.
Chapter menu
Resources
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Chapter 4
Section 2 Tour of the Periodic Table
Most Elements Are Metals, continued
Other Properties of Metals
• An alloy is a solid or liquid mixture of two or more
metals.
• The properties of an alloy are different from the
properties of the individual elements.
• Often these properties eliminate some
disadvantages of the pure metal.
• A common alloy is brass, a mixture of copper and zinc.
• Brass is harder than copper and more resistant to
corrosion.
Chapter menu
Resources
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Chapter 4
Section 2 Tour of the Periodic Table
Nonmetals and Metalloids
• An nonmetal is an element that is not a metal.
Nonmetals do not conduct electricity.
• A metalloid is a chemical element with properties in
between, or that are a mixture of, those of metals and
nonmetals.
• There is no standard definition of a metalloid.
• We call all elements metalloids which are adjacent
to the metal/nonmetal border (
in your table)
except for Aluminum, which is definitely a metal.
• B, Si, Ge, As, Sb, Te, Po
Chapter menu
Resources
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Chapter 4
Visual Concepts
Comparing Metals, Metalloids, and Nonmetals
Chapter menu
Resources
Copyright © by Holt, Rinehart and Winston. All rights reserved.