USES OF METALS.

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Presentation transcript:

USES OF METALS

eg have high melting points Metals all have similar properties eg have high melting points They are all solid at room temperature except for mercury!

Most metals are dull on the surface, but shiny when cut or polished. The metal surface reacts with oxygen to make a dull coat.

Both heat and electricity flow easily through metals

Steel is a very strong metal. It is made when iron is mixed with carbon.

malleable (change shape easily) metals are tough and malleable (change shape easily) tungsten melts at 3410 C Mercury freezes at -40C

Uses of metals

Uses of metals

Uses of metals

Uses of metals

steel coated with copper Uses of metals 1p coins: steel coated with copper Steel rusts quickly

Uses of metals Aluminium is a very lightweight metal. It has a low density and does not easily corrode. Pure aluminium is weak and soft. Aluminium and magnesium alloy is stronger, harder and stiffer.

Uses of metals

Uses of metals

Stainless steel does not rust, but it’s expensive. Uses of metals Stainless steel does not rust, but it’s expensive. Nickel and Chromium mixed with iron make this alloy.

Uses of metals