Can you spot the 5 ways atoms rearrange themselves?

CBSE Class 10 Types of Chemical Reactions

But what happens when a molecule simply can't take the heat? It breaks apart. We call this a decomposition reaction, where one single reactant shatters into multiple pieces.

This isn't just a lab trick. Splitting water with electricity gives us 'Green Hydrogen'—the ultimate clean fuel. But here's the catch: forcing that breakup takes so much energy that right now, less than one percent of our hydrogen is made this way.

What happens when you drop a shiny iron nail into a beautiful blue pool of copper sulphate? You might expect them to just sit there peacefully.

But iron is a chemical bully. Being more reactive, it kicks copper out of the solution, turning the liquid green and leaving a crusty copper coating on the nail.

Chemists call this a displacement reaction. It follows a strict set of rules known as the Reactivity Series, where only a stronger metal can steal the spot of a weaker one.

But what happens if two couples hit the dance floor, and both decide to swap partners? Welcome to double displacement.

Sodium pairs up with chloride to stay happily dissolved. But Barium and Sulfate lock together so tightly they form a solid precipitate, dropping straight to the bottom.

Back in 1789, Antoine Lavoisier proved a strict rule about these swaps. If you weigh the chemicals before and after, the mass is identical. Matter is never lost, just rearranged.