The Periodic Table Quiz vs Chemical Formulas Quiz使用状況と統計
Test and improve your knowledge of the chemical elements.
Find all the chemical elements on the period table.
Find out the year of discovery and who discovered the element.
Answer almost 600 questions to discover the periodic table.
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Quickly learn the chemical formulas of the most important inorganic and organic substances and ions, taught in secondary education (high school), by taking the free multiple choice quizzes. Trivial name (common name), systematic name, or both are given, depending on their importance.
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The Periodic Table Quiz VS. 
Chemical Formulas Quiz1月 21, 2026