Atomic theory has changed a lot over time. Let’s take a look at how it all started and developed:
Early Ideas: Long ago, thinkers like Democritus imagined that everything is made up of tiny particles called atoms. They believed these atoms were small and couldn’t be divided. This was a pretty wild idea back then!
Dalton's Model: In the 1800s, John Dalton helped us understand atoms better. He thought of atoms as solid balls and said each element has its own unique kind of atom.
Discovery of Electrons: Then came J.J. Thomson, who found the electron. This changed things again! He suggested that atoms have negative particles (electrons) floating inside a 'soup' of positive charge. He called this the "plum pudding" model.
Nuclear Model: Next was Ernest Rutherford. He discovered that atoms have a very dense center called a nucleus. This finding really changed how we see atoms!
Quantum Mechanics: Nowadays, we use a more modern view called the quantum model. In this model, electrons don’t have fixed paths. Instead, they are found in fuzzy clouds described by something called wave functions.
It's really interesting to see how our understanding of atoms has grown and changed over time!
Atomic theory has changed a lot over time. Let’s take a look at how it all started and developed:
Early Ideas: Long ago, thinkers like Democritus imagined that everything is made up of tiny particles called atoms. They believed these atoms were small and couldn’t be divided. This was a pretty wild idea back then!
Dalton's Model: In the 1800s, John Dalton helped us understand atoms better. He thought of atoms as solid balls and said each element has its own unique kind of atom.
Discovery of Electrons: Then came J.J. Thomson, who found the electron. This changed things again! He suggested that atoms have negative particles (electrons) floating inside a 'soup' of positive charge. He called this the "plum pudding" model.
Nuclear Model: Next was Ernest Rutherford. He discovered that atoms have a very dense center called a nucleus. This finding really changed how we see atoms!
Quantum Mechanics: Nowadays, we use a more modern view called the quantum model. In this model, electrons don’t have fixed paths. Instead, they are found in fuzzy clouds described by something called wave functions.
It's really interesting to see how our understanding of atoms has grown and changed over time!