Science 10.2-10.3

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Metal

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quiz 11-10-22

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Metal

an element that is generally shiny, it is easily pulled into wires or hammered into thin sheets. A metal is a good conductor of electricity and thermal energy.

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Luster

Describes the ability of a metal to reflect light

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3
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Ductility

the ability to be pulled into thin wires

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4
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Malleability

the ability of a substance to be hammered or rolled into sheets.

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5
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Alkali metals

Elements in group 1, react quickly with other elements such as oxygen. Occur only in compounds. Have silvery appearance. Soft. Lowest densities of all metals.

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Alkaline earth metals

the elements in group 2 on the periodic table. React quickly. Don't occur naturally, soft, silvery, and has a higher density than alkali metals, but still have a low density.

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Transition elements

elements in groups 3-12. High melting points, greater strength, and higher densities. Some exist freely in nature.

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8
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Nonmetals

are elements that have no metallic properties.

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9
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halogen

an element in group 17 of the periodic table. can react with metal and salt. react with other compounds to form compounds. Don't exist as free elements.

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10
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Noble Gases

elements in group 18. dont react with other elements

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11
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metalloid

an element that has physical and chemical properties of both metals and nonmetals. Also referred to as semi-conducters

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Semiconductor

conducts electricity at high temperatures, but not at low temperatures.

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