Transcript Metals reactivity series

21/07/2015
Using the reactivity series
TP - WALT Demonstrate
the R.S. Using Water,
oxygen and acid
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Reactions of metals with oxygen
When a metal reacts with oxygen it will form a METAL
OXIDE. This is what happens when a metal rusts. We can
make this reaction happen quicker by burning the metal.
METAL + OXYGEN
METAL OXIDE
Copy and complete the following reactions:
1) Magnesium + oxygen
2) Copper + oxygen
3) Calcium + oxygen
4) Iron + oxygen
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Reactions of metals with water
When a metal reacts with water hydrogen is always given
off. The other product will be either a metal hydroxide or
a metal oxide.
METAL + WATER
METAL + WATER
METAL OXIDE + HYDROGEN
METAL HYDROXIDE + HYDROGEN
Copy and complete the following reactions:
1) Sodium + water
2) Potassium + water
3) Calcium + water
4) Iron + steam
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Reactions of metals with acids
When a metal reacts with an acid it gives off hydrogen
(which can be “popped” using a lit splint). The other
product is a salt.
METAL + ACID
e.g. magnesium + hydrochloric acid
SALT + HYDROGEN
magnesium chloride + hydrogen
Copy and complete the following reactions:
1) Calcium + hydrochloric acid
2) Zinc + hydrochloric acid
3) Iron + hydrochloric acid
4) Lithium + sulphuric acid
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Complete the following reactions:
1) Lithium + water
Lithium hydroxide + hydrogen
2) Lithium + hydrochloric acid
Lithium chloride + hydrogen
3) Silver + oxygen
Silver oxide
4) Magnesium + sulphuric acid
Magnesium sulphate + hydrogen
5) Potassium + oxygen
Potassium oxide
6) Aluminium + oxygen
Aluminium oxide
7) Manganese + water
Manganese oxide + hydrogen
8) Sodium + sulphuric acid
Sodium sulphate + hydrogen
9) Lithium + oxygen
Lithium oxide
10) Nickel + hydrochloric acid
Nickel chloride + hydrogen
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An example question on reactivity
Metal
A
B
C
D
E
Reaction with
dilute acid
Reaction
with water
Reaction
with oxygen
Some reaction
Slow reaction
Burns brightly
No reaction
No reaction
Reacts slowly
No reaction
No reaction
No reaction
Violent reaction Slow reaction
Burns brightly
Reasonable
reaction
Reacts slowly
Reacts with
steam only
The Reactivity Series
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Potassium
Sodium
Calcium
Magnesium
The Reactivity Series lists
metals in order of reactivity:
Aluminium
Carbon
Zinc
Iron
Lead
Copper
Silver
Gold
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Measuring the reactivity of
metals and acid
TP – WALT Display the increasing
reactivity of metals using acid and
measuring temperature
WILF – Complete expt
Questions answered
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• When metals are placed in acid, a
salt and hydrogen are produced
• When they react, energy is also
released in the form of heat
• The more reactive the metal, the
more heat is released during the
reaction
Apparatus
Various metals (Magnesium,
Copper, lead, iron and calcium)
Hdrochloric Acid
Test tubes/ Test tube rack
Thermometer
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Method
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1) Measure 10 mls Hydrolchloric Acid
2)Take the temperature
3)Take a small piece of metal
4)Add metal to the acid
5)Wait until the reaction has finished
6)Take the temperature again and
calculate the difference
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Measuring the reactivity of metals and acid
Metal
Iron
Magnesium
Copper
Calcium
Lead
Temperatur Temperatur Temperature
e Before (C) e After (C) Difference
(C)
Questions, Questions
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1) Place your metals in order of
releasing heat, with those that
released the most at the top
2)How does this compare to your
reactivity series that you have in
your books
3)For each of the reactions, write a
word equation
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