Vocabulary Malleable A term used to describe material that can be hammered or rolled into shape Ductile A term used to describe a material that can be pulled out into a long wire Conductor ID: 302277
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Slide1
The Periodic TableSlide2
Vocabulary
Malleable
-A term used to describe material that can be hammered or rolled into shape.
Ductile
-A term used to describe a material that can be pulled out into a long wire.
Conductor
-A substance that transmits heat or electricity easily.
Magnetic
-a characteristic of those metals that are attracted to magnets and can be made into magnets
Reactivity
-The case and speed with which an element or compound combines with other elements and compounds.
Corrosion
-The gradual wearing away of a metal element due to a chemical reaction.
Alloy
-A mixture of two or more metals.
Nonmetal
-An element that lacks most of the properties of metals.
Semiconductor
-An element that can conduct electricity under some conditions.
Metalloid-
An element that has some of the characteristics of metals and some of the characteristics of nonmetals.Slide3
Periodic TableSlide4
Element ClassificationSlide5
Physical Properties of Metal
Most metals are
solid
at room temperature.
Mercury is a liquid at room temperature.Slide6
Conductivity
Most metals conduct heat and electricity very easily.
Copper is used for both extensively.Slide7
Magnetic
Several metals are attracted to magnets.
Iron (Fe), Cobalt (Co) and Nickel (Ni) are magnetic.Slide8
Malleability and Ductility
Malleable- Most metals can be hammered or rolled into shape.
Ductile-Most metals can be pulled into long wire.Slide9
Luster/Shine
Metals are often lustrous.
Nonmetals tend to be dull.Slide10
Reactivity
Sodium and Potassium react with air and water explosively.
Gold and Chromium are
unreactive
.
Most metals oxidize over time. Slide11
Alloys
Brass- Mixture of Copper and Zinc.
Bronze- Mixture of Copper and Tin.
Steel- Mixture of Iron, Carbon, Chromium, and Vanadium.Slide12
Nonmetals
The properties of nonmetals are the opposite of metals.Slide13
Physical PropertiesSlide14
Metalloids
Silicon, for example, possesses a metallic luster, yet it is an inefficient conductor and is brittle.
The
reactivity of the metalloids depends on the element with which they are reacting. For example, boron acts as a nonmetal when reacting with sodium yet as a metal when reacting with fluorine.
The
boiling points, melting points, and densities of the metalloids vary widely.
The
intermediate conductivity of metalloids means they tend to make good semiconductors.