Solids, Liquids and Gases

The video explains the discovery of Brownian motion, initially observed by Robert Brown and later explained by Albert Einstein as the result of water molecules colliding with pollen grains. This phenomenon is part of the kinetic theory of matter, which states that all matter is made of tiny particles in constant motion. The video further explores the states of matter—solids, liquids, and gases—highlighting the differences in particle arrangement, movement, and forces of attraction. Brownian motion is observable in both liquids and gases due to their free-moving particles.

How do the particles in a solid differ from those in a liquid?

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What characteristics define the behavior of gas particles according to the text?

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