Copper is a soft, malleable metal with high thermal and electrical conductivity. It has a reddish-orange color and is used as a conductor as well as in building materials and alloys. Copper has been used for thousands of years, originally being mined on Cyprus. It is used in wiring, electronics, motors, and architecture.

3.  It is a ductile metal with very high thermal and
electrical conductivity. Pure copper is soft and
malleable; a freshly exposed surface has a reddish-orange
color. It is used as a conductor of heat and
electricity, a building material, and a constituent
of various metal alloys.
 The softness of copper partly explains its high
electrical conductivity and thus also high thermal
conductivity, which are the second highest among
pure metals at room temperature.
 Copper does not react with water but it does
slowly react with atmospheric oxygen to form a
layer of brown-black copper oxide which, unlike
the rust which forms when iron is exposed to moist
air, protects the underlying copper from more
extensive corrosion.

4.  The metal and its alloys have been used for
thousands of years. In the Roman era, copper
was principally mined on Cyprus, hence the
origin of the name of the metal as сyprium
(metal of Cyprus).
 Wire and cable
 Electronic and related devices
 Electric motor
 Copper motor rotors, a new technology
designed for motor applications where energy
savings are prime design objectives.
 Architecture

6.  Silver is a chemical element with the chemical
symbol Ag and atomic number 47. A soft, white,
lustrous transition metal, it possesses the highest
electrical conductivity of any element and the
highest thermal conductivity of any metal.
 Silver is a very ductile, malleable (slightly harder
than gold), coinage metal, with a brilliant white
metallic luster that can take a high degree of
polish. It has the highest electrical conductivity
of all metals, even higher than copper, but its
greater cost has prevented it from being widely
used in place of copper for electrical purposes.

7.  Currency
 Jewelry and silverware
 Dentistry
 Construction of high-quality musical wind
instruments of many types.

8.  Silver has been used for thousands of years
for ornaments and utensils, trade, and as the
basis for many monetary systems. Its value as
a precious metal was long considered second
only to gold. The word "silver" appears in
Anglo-Saxon in various spellings, such as
seolfor and siolfor. A similar form is seen
throughout the Germanic languages The
chemical symbol Ag is from the Latin word for
"silver", argentum (compare Greek άργυρος,
árgyros), from the Indo-European root *arg-,
meaning "white" or "shining". Silver has been
known since ancient times.

10.  Gold is a chemical element with the symbol
Au and atomic number 79. It is a dense, soft,
malleable and ductile metal with a bright
yellow color and luster, the properties of
which remain without tarnishing when
exposed to air or water.
 Gold resists attacks by individual acids, but it
can be dissolved by aqua regia (nitro-hydrochloric
acid), so named because it
dissolves gold. Gold also dissolves in alkaline
solutions of cyanide, which have been used
in mining. It dissolves in mercury.

11.  Monetary exchange
 Investment
 Jewelry
 Medicine (dentistry)
 Industry
 Electronics

12. 1. All the elements of the group IB
have been known since prehistoric
times, as all of them occur in
metallic form in nature and no
extraction metallurgy has to be
used to produce them.