there are more than 100 elements and some
have similar properties as shown on the
periodic table of elements.
Just WHERE are these elements
with similar properties?
Where are they located on the
Periodic Table of Elements?
Look in your book (p. 604-65) for the zigzag line!
What are the properties of
metals, nonmetals, and
metalloids?
Draw a triple Venn diagram to
compare their properties
metals ---- nonmetals
• Solids at room temp.
(except mercury)
• Most are gases
metals ----- nonmetals
• higher melting points
• lower melting points
metals ---- nonmetals
• malleable
• brittle (break easily)
(can be pounded & shaped)
• harder
• Softer than metals
metals ---- nonmetals
• Ductile
(can be drawn into wire)
• Not ductile
metals ---- nonmetals
• Has luster (shiny)
• dull
metals ---- nonmetals
• Good conductors of
heat and electricity
• Poor conductors
(good insulators)
Metalloids
• Have some of the properties of metals and
properties of nonmetals
• Include semiconductors (Used in electronics; can
conduct but not as good as metals)
• Steel is an alloy of iron with about 1
percent carbon.
• It may also contain other elements, such
as manganese.
• Used to make almost everything from
skyscraper girders, automobiles, and
appliances to thumb tacks and paper clips
• steel is one of the world's most vital
materials.