The Most Basic Unit of Matter: The Atom
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Atoms make up all matter in the universe. Learn about the most basic building block of matter and the 3 particles that make up this fundamental unit.
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What is an atom? Definition and Structure
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2.3 A Cell is the Smallest Unit of Life – Introduction to
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The atom Institute of Physics
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2.2: Atoms and Basic Chemistry - Biology LibreTexts
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States of Matter Let's Talk Science
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What are the most basic units of matter?
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Atom - Simple English Wikipedia, the free encyclopedia
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The Structure of Matter
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Learn the Parts of an Atom
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Scientists Say: Electron
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The Most Basic Unit of Matter: The Atom
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The Building Blocks of Matter - Lesson - TeachEngineering