Does a connection or relationship
exist between the reactivity of a
metal and when it was
discovered?
Laura Delascasas 8C
Reactivity Series and Periodic Table
METALS
I am going to find out what is the relationship or the connection between
this metals.
I will be looking at:
1) Potassium
2) Sodium
3) Calcium
4) Silver
5) Platinum
I think that the metals at the bottom of the reactivity series are discovered
first because they are less reactive and for a metal to be more reactive
is has to be in places where they don’t react therefore it would be harder
to extract them earlier.
1. Potassium
Properties
The symbol for Potassium is (K). Potassium
is a soft, silvery-white metal, member of the
alkali group of the periodic chart.
Potassium is silvery when first cut but it
oxidizes rapidly in air and tarnishes within
minutes, so it is generally stored under oil
or grease. It is light enough to float into
water with which it reacts instantly to
release hydrogen, which burns with a lilac
flame, the Melting point is 63.2 °C and it’s
Boiling point is 760 °C its Atomic number
is 19 its Atomic mass 39.0983 g.mol -1
Discovery
 Potassium metal was first
isolated by Sir. Humphery
Davy in in 1807 AD, who
obtained it through the
electrolysis of very dry
molten caustic potash It
was first discovered in
England
Potassium is used for
Potassium is used for Glass, Soap, Substitute for table salt,
Medical, Fertilizers, Gunpowder, Potassium nitrate,
chloride And permanganate.
2.Sodium
Properties
 The symbol for sodium is (NA).
Sodium It’s a soft metal, reactive
and with a low melting point, its
melting point is 97.5 °C and its
Boiling point is 883 °C its atomic
number is 11 its atomic mass is
22.98977 g.mol -1
Discovery
Sodium was
discovered by Sir
Humphrey Davy at
1807 in England.
Sodium was first
isolated in 1807 by Sir
Humphry Davy, who
made it by the
electrolysis of very dry
molten sodium
hydroxide
Sodium is used for
 Sodium is used for Medicine, Agriculture,
Manufacture of organic compounds, To purify molten
metals, Sodium carbonate / hydroxide soap cleaners
Sodium bicarbonate / chloride / hypochlorite / nitrate
/ silicate
3.Calcium
Properties
 The symbol for calcium
is (Ca), its atomic
number is 20, its atomic
mass is 40.08, its
melting point is 840 °C,
it’s boiling point is 1484
°C. Calcium is a soft,
silvery metal in element
form.
Discovery
 Calcium was discovered by
Sir Humphrey Davy at
1808 in England. Calcium
metal was not isolated
until 1808. After learning
that Berzelius and Pontin
prepared calcium
amalgam by electrolysing
lime in mercury, Sir
Humphry Davy was able to
isolate the impure metal.
Calcium is used for
 Calcium is used for Dairy products are an excellent
source of calcium. Deficiency can affect bone and
teeth formation, Vitamin D is needed to absorb
calcium, Reducing agent, Alloying agent used in the
production of alloys Coral calcium , calcium
carbonate, chloride, citrate, carbide, hydroxide
4.Silver
properties
 The symbol for calcium is (AG) its
atomic number is 47 and its atomic mass
is 107.87 g.mol its melting point is 962
°C and its boiling point is 2212 °C. Silver
is Pure silver is nearly white, lustrous,
soft, very ductile, malleable, it is an
excellent conductor of heat and
electricity. It is not a chemically active
metal, but it is attacked by nitric acid
(forming the nitrate) and by hot
concentrated sulfuric acid. It has the
highest electrical conductivity of all
metals, but its greater cost has prevented
it from being widely used for electrical
purposes.
Discovery
 Silver was discovered by
Known since ancient times at
no data is not known,
Sometime prior to the
autumn of 1803, the
Englishman John Dalton was
able to explain the results of
some of his studies by
assuming that matter is
composed of atoms and that
all samples of any given
compound consist of the
same combination of these
atoms
Silver is used for
 Silver is used for Precious metal, Coinage, Jewelry,
Tableware, Dental alloys, Silver fulminate is an
explosive, Photography,
5. Platinum
Properties
 Platinum is a lustrous silvery-
white, malleable, ductile metal
its atomic number 78 and its
atomic mass 195.09 g.mol -1 , its
melting point is1772 °C and its
boiling pint 3800 °C.
Discovery
 Chabaneau first obtained
malleable platinum in 1789
in order to produce a chalice
presented to Pius VI. It
seems that the British
chemist W. H. Wollaston
was the first person to
obtain a sample of pure
platinum in the early 1800s
Platinum is used for
 Platinum is used for Used in catalytic converters for
automobiles, Making crucibles, Coating missile nose
cones, Jet engine fuel nozzles, Medical treatments of
cancer ,
 http://www.facts-about.org.uk
 http://www.webelements.com/
 Google.com
 http://www.zephyrus.co.uk/thereactivityseries.html