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Year 11 Preliminary Chemistry: Redox Reactions (Module 3)

Let’s take a closer look at Redox Reactions (Module 3 Preliminary Chemistry)

Hosted by our Talent 100 Academic Director Dr Nikhil Vasan, we’re going to break down a few of the most important topics for each section of Module 3: Metal Activity Series and Displacement Reactions for Preliminary Chemistry (Year 11).

In this episode of Preliminary Chemistry Talent Teaching Series, we’ll be taking a look at Redox Reactions¬†part of Module 3: Reactive Chemistry.

One of the most important types of chemicals that participate in reactions are metals. Metals have a broad range of reactions that they participate in, but there’s something that links metals together: that’s how they like to treat their electrons. Let’s take Magnesium for example, which has an outer shell of two electrons (which is a linking point for metals, between 1-3 electrons which is something really low.

Magnesium has 2 outer electrons; it can either grab another 6 electrons resulting in a total of 8 in its outer shell, or it can get rid of 2 electrons and it also has a four outer shell because one of the inner ones becomes an ‘outer shell.’

What’s easier for Magnesium?

To get rid of 2 electrons or gain 6? Getting rid of 2 is easier because you just need to move 2 electrons around. It then forms the following:

Year 11 Chemistry: Redox Reactions

The outer shell is now gone, and it just has a full inner shell. You might be asking why it is 2+?

Redox Reactions are some of the most poorly understood parts of Preliminary Chemistry.¬†To keep revising, catch the rest of Nikhil’s revision lesson by watching the video below on our YouTube channel:

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Click here for more information, and register today for our Year 11 Chemistry tuition courses at Talent 100.

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