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Test Tube

Chapter 6 - What Are The Mechanisms Of Chemical Change?

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Atom Symbol

Chapter 1 - Models Of The Particulate Nature Of Matter

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Chapter 2 - Models Of Bonding & Structure

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 Globe with Meridians

Chapter 3 - Classification Of Matter

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Fire

Chapter 4 - What Drives Chemical Reactions?

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Rocket

Chapter 5 - How Much, How Fast & How Far?

<ul>
	<li>Imagine a little device that changes electric power (like from your battery) into some magical chemical reactions! This is an electrolytic cell!</li>
	<li>Fun fact: Electrolytic cells are the opposite of the batteries in your gadgets! Batteries give out electricity; electrolytic cells take it in!</li>
</ul>

<ul>
	<li>Electrolysis = using electricity to cause a non-spontaneous chemical reaction.</li>
	<li>Think of it as the wizardry spell of the chemistry world! 🪄 You need some power (electricity) to make things happen.</li>
</ul>

<ul>
	<li>Electrolyte: It&#39;s not a type of energy drink! It&#39;s a solution (or molten salt) with free-to-move positive cations 🐱 and negative anions 🐶.</li>
	<li>Electrodes: Two of them - a cathode and an anode. They&#39;re like the gates where all the magic takes place!</li>
	<li>DC Power Source: This gives the zap! needed for the magic. It has a positive and a negative terminal.</li>
</ul>

<ul>
	<li>Electrons flow from the negative terminal to the positive one (just like people moving in a music concert).</li>
	<li>Cathode Party: Here, cations get an extra electron and get reduced (think of them shedding their + charge).</li>
	<li>Anode Gathering: Anions give away their electrons (oxidation) and usually turn into a gas or something else fun.</li>
</ul>

<ul>
	<li>Electrolysis of molten sodium chloride (NaCl)
	<ul>
		<li>Sodium ions (Na+) at the cathode: Na+ + e&ndash; &rarr; Na(l) (Hello, molten sodium!)</li>
		<li>Chloride ions (Cl&ndash;) at the anode: 2Cl&ndash; &rarr; Cl2(g) + 2e&ndash; (Puff! Chlorine gas!)</li>
		<li>Overall reaction: 2NaCl(l) &rarr; 2Na(l) + Cl2(g)</li>
	</ul>
	</li>
</ul>

💥 Cool Fact: Some metals like aluminium, lithium, and our friend sodium are produced using this method. BUT! They&#39;re shy and don&rsquo;t like oxygen, so we do the magic trick in a place without air!

<ul>
	<li>Task: Write reactions for the electrolysis of molten lead bromide (PbBr2).
	<ul>
		<li>Identify the cation and anion.</li>
		<li>Write the half-equations at the cathode and anode.</li>
		<li>Combine for the overall equation!</li>
	</ul>
	</li>
</ul>

(And remember, if bromide acts like chloride did, there&#39;s probably gas involved! 🎈)

&nbsp;

And there you have it! Electrolytic cells are just like magic shows, using electricity to bring chemistry to life! 🎉

Chapter 6 - What Are The Mechanisms Of Chemical Change?

Unveiling Electrolytic Cells: Converting Electrical to Chemical Energy

Table of content

Electrolytic Cells: A Quick Intro 🎉

Electrolysis: The Magic Wand of Electrolytic Cells 💡

The Key Components of an Electrolytic Cell 🔌

Unlock the Full Content!

Chapter 6 - What Are The Mechanisms Of Chemical Change?

Unveiling Electrolytic Cells: Converting Electrical to Chemical Energy

Table of content

Electrolytic Cells: A Quick Intro 🎉

Electrolysis: The Magic Wand of Electrolytic Cells 💡

The Key Components of an Electrolytic Cell 🔌

Unlock the Full Content!