Study GuidePhysics–Thermodynamics1.Development of the Ideal Gas LawGases may look simple, but their behavior follows clear scientific rules. Scientists discovered theserules by doing careful experiments over many years. Some of the key contributors wereRobertBoyle,Jacques Charles, andJoseph Gay-Lussac.Together, their work led to what we now call theIdeal Gas Law.Anideal gasis a model used to understand real gases. In this model, gas particles are identical, verysmall, and interact only during brief, elastic collisions—like perfectly bouncing billiard balls.Most real gases behave very much like ideal gases under everyday temperatures and pressures onEarth. However, gases inside the Sun donotbehave ideally because the temperatures andpressures there are extremely high.1.Boyle’s Law: Pressure and VolumeBoyle’s Law explains what happens to a gas whentemperature stays constant.•When a gas iscompressed, itspressure increases.•When a gasexpands, itspressure decreases.This means pressure and volume areinversely related.Mathematical form:If agas changes from one state to another:•(P) and (V) are the original pressure and volume•(P') and (V') are the new pressure and volumeSo, if pressure doubles, volume becomes half (as long as temperature does not change).Preview Mode
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