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Chemistry > Chem 2D > Flashcards

Chem 2D Flashcards

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0
Q

A solid combination of atoms of two or more metals

A

Alloy

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1
Q

The allotrope of carbon which is the hardest substance known

A

Diamond

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2
Q

A layer that is physically attached to a product to protect, add color, or enhance its performance

A

Coating

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3
Q

An alloy of zinc and copper

A

Brass

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4
Q

Plastics are made from this substance

A

Petroleum

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5
Q

The hardness of pencil lead is controlled by the amount of this substance mixed in with the graphite

A

Clay

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6
Q

A solid substance with electrical conductivity between that of conductors and nonconductors

A

Semiconductor

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7
Q

An allotrope of carbon composed of flat sheets of carbon atoms that can slip by one another easily

A

Graphite

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8
Q

Elements that make up most semiconductors

A

Metalloids

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9
Q

In electroplating, the power source provides these needed particles

A

Electrons

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10
Q

Very thing glass tubes that carry voice or electronic messages, they are being used to replace copper wires

A

Fiber optics or optical fibers

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11
Q

A very thin layer of atoms or molecules deposited in a substance

A

Film

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12
Q

A substance composed of very small balls of carbon not linked to each other, appearing like a powder

A

Fullerene

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13
Q

These engineered substances have high melting points and are strong at high temperatures which makes them food replacement for steel in turbine engines

A

Engineered ceramics

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14
Q

A material that can conduct electric current without any electrical resistance

A

Superconductors

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15
Q

The process of adding impurities to an element to improve its properties

A

Dopping

16
Q

The deposit of a thin layer of metal on the surface of an abject by a process involving oxidation reduction reactions

A

Electroplating

17
Q

Different forms of an element that each have distinctly different chemical or physical properties

A

Allotropes

18
Q

In electroplating the electrode at which reduction occurs

A

Cathode

19
Q

This engineered substance, a metal replacement for many uses is composed of carbon atom chains or rings with hydrogen and other atoms attached

A

Plastic

20
Q

Which nonmetal is a component of both steel and stainless steel

A

Carbon

Chemistry (7 decks)

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