Reduction
The gain of electrons by an atom, ion, or molecule, decreasing its oxidation state. The other half of every redox reaction — reduction and oxidation always occur together.
💡 Intuition
Grabbing electrons. The charge gets 'reduced' (becomes more negative).
Core Idea
OIL RIG: Reduction Is Gain of electrons — always paired with oxidation in a redox reaction.
🔬 Example
🎯 Why It Matters
The other half of every redox reaction — reduction and oxidation always occur together.
⚠️ Common Confusion
Reduction and oxidation always happen together—electrons have to go somewhere.
How to Use Reduction
When this concept appears in chemistry, it usually controls how you interpret a representation, a quantity, or a change in a system. Students make faster progress when they can explain what reduction tells them before reaching for an equation or memorized phrase.
A strong self-check is to say what reduction does, what it does not do, and which nearby idea it is easiest to confuse with. That kind of explanation makes later calculations, lab reasoning, and compare pages much more reliable.
Related Concepts
How Reduction Connects to Other Ideas
To understand reduction, you should first be comfortable with electron and ion. Once you have a solid grasp of reduction, you can move on to oxidation and redox.
Go Deeper
Frequently Asked Questions
What is Reduction in Chemistry?
The gain of electrons by an atom, ion, or molecule, decreasing its oxidation state.
Why is Reduction important?
The other half of every redox reaction — reduction and oxidation always occur together.
What do students usually get wrong about Reduction?
Reduction and oxidation always happen together—electrons have to go somewhere.
What should I learn before Reduction?
Before studying Reduction, you should understand: electron, ion.