Cells and batteries: Energy Changes: Chemistry: GCSE (9:1)

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13 Terms

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Electrochemical cell

A device containing chemicals that react to produce electricity

<p>A device containing chemicals that react to produce electricity</p>
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Battery

Two or more electrochemical cells in a series

<p>Two or more electrochemical cells in a series</p>
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Constructing a simple cell

Join two different metals together, whilst both are in contact with an electrolyte

<p>Join two different metals together, whilst both are in contact with an electrolyte</p>
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Factors which determine a cell's voltage

Type of electrode, concentration of electrolyte, Type of electrolyte

<p>Type of electrode, concentration of electrolyte, Type of electrolyte</p>
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Electrode

a device for conducting electricity

<p>a device for conducting electricity</p>
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Electrolyte

A substance containing free moving ions

<p>A substance containing free moving ions</p>
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Rechargeable cell

A cell in which the chemical reaction is reversed when a current is applied

<p>A cell in which the chemical reaction is reversed when a current is applied</p>
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Non-rechargeable cell

A cell in which the current stops as a reactant runs out

<p>A cell in which the current stops as a reactant runs out</p>
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Reactivity and voltage

The larger the difference in electrode reactivity, the higher the voltage

<p>The larger the difference in electrode reactivity, the higher the voltage</p>
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Metal

An element that forms positive ions

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Reactivity of a metal

the tendency of a metal to form positive ions

<p>the tendency of a metal to form positive ions</p>
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Positive terminal of a cell

Less reactive metal, accepts electrons

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Negative terminal of a cell

More reactive metal, gives electrons