0973 04 Electrochemistry SUPPLEMENT

Front

Define oxidation in terms of electrons

Back

Oxidation is the loss of electrons

Front

Define reduction in terms of electrons

Back

Reduction is the gain of electrons

Front

Is this process oxidation or reduction? Al → Al³⁺ + 3e⁻

Back

Oxidation

Front

Is this process oxidation or reduction? F₂ + 2e⁻ → 2F⁻

Back

Reduction

Front

In this reaction, what has been oxidised and what has been reduced? K + Na⁺ → K⁺ + Na

Back

K has been oxidized, Na⁺ has been reduced

Front

In this reaction, what has been oxidised and what has been reduced? 2Al + 3Ca²⁺ → 2Al³⁺ + 3Ca

Back

Al has been oxidised, Ca²⁺ has been reduced

Front

What are electrolytes?

Back

An ionic compound in the molten state or dissolved in water, it undergoes electrolysis

Front

Magnesium carbonate is insoluble. What do you need to do before it will conduct electricity?

Back

Melt it

Front

What is electrolysis?

Back

The decomposition of an ionic compound, when molten or in aqueous solution, by the passage of an electric current

Front

What is the negative electrode called in electrolysis?

Back

the cathode