Pudding&Clouds
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Atoms are the smallest particles that matter is made up of, according to a theory first proposed by Greek philosophers Leucippus and Democritus. Atoms cannot be seen even with microscopes due to their extremely small size. Modern scientific models describe atoms as having a dense nucleus of protons and neutrons surrounded by electrons, as depicted in the commonly used Bohr model. All matter in the world consists of these fundamental atomic particles.
Pudding&Clouds
- 1. A Particulate World Lesson 1 : Pudding & Clouds Chemistry I A. Kuzara
- 2. Pudding & Clounds ChemCatalyst In the 5 th century BCE, a Greek philosopher named Leucippus and his student, Democritus, stated: “ All matter is made up of particles that cannot be divided. These particles are called atoms.” What do you think atoms are?
- 3. Pudding & Clouds Atoms extremely small particles, cannot be seen, even with microscopes from the Greek word for indivisible often called smallest unit of matter scientists use models supported by scientific evidence to describe atoms
- 6. Pudding & Clouds Parts of an Atom Mostly empty space Dense nucleus or protons and neutrons Electrons around nucleus Bohr Model is mostly commonly used
- 7. Pudding & Clouds Wrap-Up All matter is made up of extremely small particles called atoms. These particles are too small to be seen even with a microscope. Science is theoretical and dynamic. Models and theories are continually being revised, refined, or replaced with new models and theories.