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Which of the following when dissolved in water and placed in the conductivity apparatus would cause the light to glow?
 
Table Salt (NaCl)
 
Ethyl alchol (C2H5OH)
 
Sugar (C12H22O11)
 
Glycerine (C3H8O3)
Ionic compounds will conduct an electric current when they are
 
Solidified
 
Melted
 
Frozen
 
Dehydrated
more positive standard electrode potential
anode
anode
the more negative standard electrode potential
more positive standard electrode potential
cathode
Cathode
more positive standard electrode potential
What is shelf life?
Storage life
Iron at the beach rusts faster than iron in the mountain.
True
27. What is the scientific name for rust and its chemical formula?
Iron (II) Oxide FeO *xH2O
With electrolysis, it would be possible to produce many of the materials and products that we use today.
True
Without electrolysis, it would be possible to produce many of the materials and products that we use today.
False
What does “lysis” mean?
to cut or to break
What does “electro-” mean?
movement of electrons / electricity
In electrolytic cells, what produces chemical changes?
A battery
In galvanic cells, what produces electricity?
Chemical changes
Rusting
The corrosion of iron and steel is called rusting
The coating of an object with a thin layer of a metal by eletrolysis
Electroplating
The positive electrode connected to the positive terminal of the d.c. power source
Anode
is the gains of electrons by a substance
Reduction
The useful metal is oxidized to create a metal oxide
Anodising
is covered with a layer of substance
Surface protection
product of galvanisation
Galvanized iron
The surface of an is covered with layer of substance. The layer stops air and water from reaching the iron and steel underneath.
Surface Protection
it will be positive in Voltaic cell but in Electrolytic is Negative
E• cell
a type of Galvanic cell that comprises of two half-cells which undergo the same half-reaction, but have different electrolyte concentrations.
Concentration Cells
The process of covering iron or steel objects with a layer of metal in order to stop the original product from corrosion.
Metal Plating
the process of covering iron or steel with a protective layer of zinc metal
Galvanization
describes the process that happen by itself
Spontaneous
is the charge an atom would have if it existed as an ion
Oxidation state(number)
is another version of a primary cell. It also uses zinc and manganese oxide as reactants, but under basic conditions.
Alkaline Dry Cel
is a non-rechargeable cell which irreversible converts chemical energy to electrical energy.
Primary cells
Electro
Electrical
is the ddecomposition of compound by the use of electricity
Electrolysis
a part of a Galvanic cell in which either oxidation or reduction can happen
A half-cell
are used to produce electricity
Chemical changes
is an ionic compound which, conducts an electric current in the process
Electrolyte
is the decomposition of compound by the use of electricity
Electrolysis
is an ionic compound which, conducts an electric current in the process
Electrolyte
is an alloy of iron containing chromium or nickel
Stainless steel
Galvanization
is the process of covering iron or steel with a protective layer of zinc metal.
is the process of covering iron or steel with a protective layer of zinc metal.
Galvanization
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