I exist at a scale too small to see, I define matter's building blocks and their interactions. What am I?

Category: Science · Difficulty: hard

Hint: Think about what the smallest units of matter are.

Answer

Subatomic particles

Explanation

Subatomic particles include protons, neutrons, and electrons, which are the fundamental components of atoms.

This is a hard science riddle — a tricky one that takes a little thought. The answer is Subatomic particles.

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