Chemical Elements Quiz
Test your knowledge of chemical elements: atomic number, molar mass, or category (metal, non-metal, noble gas...). Randomly generated multiple-choice questions with live scoring.
What is the atomic number of Hydrogène (H)?
How it works
An element is randomly drawn from a selection of common elements, and a question asks either about its atomic number (number of protons), its approximate molar mass in g/mol, or its chemical category. Choose the correct answer from four options.
What is the atomic number?
The atomic number is the number of protons in the nucleus of an atom of that element; it is this number that determines the element's chemical identity and its position in the periodic table, which is ordered by increasing atomic number.
What does molar mass represent?
Molar mass, expressed in grams per mole (g/mol), corresponds to the mass of one mole of atoms of that element (about 6.022 × 10²³ atoms). In chemistry, it is used to convert a mass of matter into an amount of substance, and vice versa.
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