Avogadro's hypothesis
- noun
- /ˌævəˈɡɑːdroʊz haɪˈpɒθɪsɪs/
- Specialized
- According to Avogadro's hypothesis, equal volumes of different gases contain the same number of molecules at the same temperature and pressure.
Examples
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When studying gas laws, students learn about Avogadro's hypothesis and its implications for molecular theory.
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Or at least it's one simple and very plausible explanation if Avogadro's hypothesis was right.
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Scientists often refer to Avogadro's hypothesis when discussing the behavior of gases in chemical reactions.
Synonyms
Equal volumes of gases at the same temperature and pressure contain the same number of molecules
Surface Forms
Morphology
Avogadro's + hypothesis
This is a named scientific principle: the proper name 'Avogadro's' does not contribute any semantic composition that would allow a learner to infer the specific content, and 'hypothesis' only signals a general scientific claim. Knowing the constituents therefore gives at best the idea that it is a scientific hypothesis, but not the specific rule about equal gas volumes and molecule counts, so the meaning is not derivable from the parts.
Etymology
Avogadro's hypothesis is named after the scientist Amedeo Avogadro, who suggested that equal volumes of gas at the same temperature and pressure hold the same number of tiny particles. Imagine two same-size balloons, one with hydrogen and one with oxygen, each full of the same number of invisible 'molecules'—this image shows why the idea helps us compare and count particles in gases.