15 electrochemistry SAQ1

An electrode is a conductor connected to the positive or negative end of a battery.

It is a table showing metals arranged in order of their tendency to lose electrons.

Inert electrodes do not react with the electrolyte, while active electrodes react with the electrolyte.

<p>Oxidation occurs at the anode.</p> Signup and view all the answers

<p>To show that a metal will displace another metal below it in the electrochemical series from a solution of its salt.</p> Signup and view all the answers

<p>The electrolyte is a substance that conducts electricity when dissolved in water or when molten.</p> Signup and view all the answers

<p>The Cu²⁺ cations are attracted to the cathode, causing a blue color to appear, while the CuCr₂O₇²⁻ anions are attracted to the anode, causing a yellow color to appear.</p> Signup and view all the answers

<p>CatNAP - Cathode Negative Anode Positive</p> Signup and view all the answers

<p>To observe the change in pH near the anode and cathode during electrolysis.</p> Signup and view all the answers

<p>Electrolysis is the breaking up of a substance due to an electric current passing through it in aqueous solution or when molten.</p> Signup and view all the answers

<p>It indicates the reduction of Cu²⁺ ions</p> Signup and view all the answers

<p>Because the metal is more reactive and has a greater tendency to lose electrons</p> Signup and view all the answers