I am a structure that determines the properties of matter, yet I am invisible without special tools. What am I?

Category: Science · Difficulty: hard

Hint: I am made of atoms bonded together.

Answer

Molecule

Explanation

A molecule is a group of two or more atoms bonded together, which determines the chemical properties of substances.

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

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