Metals Flashcards

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0
Q

Typical properties of non metals

A

Low melting points, solids, liquids, gases, does not conduct (exception carbon), brittle

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1
Q

Typical properties of metals

A

High melting points, solids (exception mercury), conduct heat and electricty, malleable, hard and dense (exception Alkalis), ductile, sonarous

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2
Q

Define corrosion

A

Undesirable process where a metal changes to it’s oxide by combining with oxygen in the air

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3
Q

Define rusting

A

The corrosion or iron when exposed to water and oxygen

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4
Q

Define an alloy

A

A mixture of two or more metals

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5
Q

Examples of alloys

A

Brass (copper and zinc)
Bronze (copper and tin)
Mild steel (iron and carbon)
Stainless steel (iron and chromium and nickel)

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6
Q

Prevention of corrosion

A

Painting
Coating with tin/plastic/grease/oil
Galvanising (coating with zinc)

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