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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 (can be pounded & shaped)
• harder
• brittle (break easily)
• Softer than metals
metals ---- nonmetals
• Ductile
(can be drawn into wire)
• Not ductile
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.