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A preview
What a question looks like
Example questionWhat is the atomic number of Calcium?
Answer: 20
- The atomic number counts protons; Calcium is element 20.
Use this practice well
Use a periodic table as a reference for early rounds, then close it to test recall. Read symbols carefully because capitalization changes a chemical symbol.
What this develops
Practise chemical element names, symbols, and atomic-number facts.
A mistake to watch for
Co is cobalt, while CO represents a compound; letter case matters.
Ways to use it
- Learn common element symbols.
- Review after a chemistry lesson.
- Check atomic-number recall.
Scope and limits
This introductory quiz does not teach chemical bonding or all periodic trends.
Sources and scope
Names, symbols and atomic numbers come from NIH PubChem, with IUPAC used as a cross-check.
Read our generation and answer-checking method.