Chemistry & the Elements Quiz
The periodic table, chemical symbols, reactions and everyday chemistry.
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About the Chemistry & the Elements Quiz
Everything around you is made of the 118 known elements. This quiz covers chemical symbols, the periodic table, famous chemists and the chemistry hiding in everyday things like salt, water and baking soda.
This quiz has 20 questions, served in rounds of 10 with a fresh mix and shuffled answers every time you play. Every answer comes with a short explanation.
Sample Chemistry & the Elements Questions & Answers
Q1. What is the chemical symbol for gold?
✅ Answer: Au
💡 Au comes from the Latin word for gold, aurum; Ag is silver.
Q2. What is the most abundant gas in Earth’s atmosphere?
✅ Answer: Nitrogen
💡 Nitrogen makes up about 78 percent of the air; oxygen is about 21 percent.
Q3. Which element has the atomic number 1?
✅ Answer: Hydrogen
💡 Hydrogen is the lightest and most abundant element in the universe.
Q4. What is the chemical formula for table salt?
✅ Answer: NaCl
💡 Table salt is sodium chloride, made of sodium and chlorine ions.
Q5. Who created the first widely recognised periodic table in 1869?
✅ Answer: Dmitri Mendeleev
💡 Mendeleev left gaps for elements not yet discovered and predicted their properties.