Blood is responsible for preventing the body from cooling down, while sweat prevents it from overheating. But how exactly does this work? Basic knowledge of thermodynamics is necessary in order to understand heat transfer, the functions of substance mixtures, and the relevance of different pressures inside the human body. What is a gas? What are the properties of different substances, and how can they be described? The following article deals with these basic principles of physics.
Gases are one of the phases of matter where the particles are vastly separated unlike what takes place in solids and liquids where particles are closer together. Gases are hard to observe so they are classified according to temperature, a number of particles, pressure, and volume.
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