2. The reactivity of metals is
described as how easily an
atom loses an electron
• For instance potassium is
extremely reactive because it
has only one valence
electron, so it is very easy to
lose it forming a positive ion
• whereas on the other
hand, copper is a weakly
reactive metal because it has
more valence electrons so it is
harder for it to become a
positive ion.
3. A displacement reaction is a type of reaction where
part of one reactants is replaced by another reactant.
• Single displacement reactions are reactions where
one reactant replaces part of the other
• Double displacement reactions are reactions
where part of one reactant is replaced by part of
another reactant.
EX:-Reaction between Mg and CuO
a.Observation: At the end of the
reaction, traces of a brown (red) solid
are left.
b.Interpretations: Copper metal is
formed during the reaction. Magnesium
metal is capable of displacing copper
from copper oxide as it is more reactive.
Chemical equation :
Mg(s) + CuO(s) Cu(s) + MgO(s)
Displacement reaction involving metal oxides
4. Those metals above hydrogen react with water or steam to produce hydrogen
METAL+COLD WATER --→METAL HYDROXIDE+
HYDROGEN
METAL+STEAM--→SALT+ HYDROGEN
5. Potassium, sodium, lithium and calcium all react violently with dilute sulfuric
acid and dilute hydrochloric acid. It is dangerous to put these metals into
an acid. The reaction is similar to the reaction with water, forming
the metal salt (either sulfate or chloride) plus H2(g) .HOW VIGOROUSLY A
METAL REACTS WITH A ACID ITS POSITION IN THE REACTIVITY SERIES
+
7. THE POSITION OF THE METALS CAN BE PREDICTED BY
CARRYING OUT REACTIONS USING THE REACTIVITY
SERIES, I.E, WHETHER A METAL BELONGS TO MOST
REACTIVE METALS, MODERATE REACTIVE METALS OR THE
LEAST REACTIVE METALS.
YOU CAN MAKE PREDICTIONS ABOUT THE REACTIONS OF
UNFAMILLIAR METALS IF YOU KNOW THEIR POSITIONS IN
THE REACTIVITY SERIES
EX:-a)Use the reactivity series to predict whether manganese would react
with copper(ǁ) sulfate solution
