🧪 Science Experiments That Changed the World

James Chadwick discovered the neutron by firing particles at beryllium and observing a new kind of radiation that had no charge.

This explained why atomic mass was higher than expected and completed the basic structure of the atom.

Before this, scientists only knew about protons and electrons.

Example: like realizing there’s a hidden piece inside an object that explains its extra weight.

• Discovered neutron

• Explained atomic mass

• Completed atomic model

• Key to nuclear physics

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