The fundamental building blocks that compose every chemical in existence

Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy · 13:09 · Video: Khan Academy · Watch at the source

In short: Everything you see, touch, and breathe is made of chemicals. This video breaks down the foundational structure of matter, explaining how atoms serve as the primary units of elements.

Chemistry is defined as the study of matter—specifically its composition, properties, and reactivity. At the heart of this field are atoms, which are composed of three subatomic particles: protons, electrons, and neutrons.

The content provides a foundational overview suitable for first-year high school or college students. It establishes how these basic units combine to form elements and compounds, providing the necessary groundwork for understanding chemical reactions.

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