ChemistryTrivia Questions & Answers
26 chemistry trivia questions, each with the correct answer and a short explanation.
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Each question reveals the answer and a quick explanation below it.
1. What is the hardest natural substance on Earth?
Answer: Diamond. Diamond is the hardest known natural material.
2. Which element has the chemical symbol 'O'?
Answer: Oxygen. O is the chemical symbol for oxygen.
3. Which metal is liquid at room temperature?
Answer: Mercury. Mercury is the only metal that is liquid at room temperature.
4. What is the chemical symbol for sodium?
Answer: Na. Sodium's symbol Na comes from the Latin word 'natrium'.
5. Which element has the atomic number 1?
Answer: Hydrogen. Hydrogen has atomic number 1, the lightest element.
6. What is the chemical symbol for potassium?
Answer: K. Potassium's symbol K comes from the Latin word 'kalium'.
7. What is the only metal that is liquid and also found in old thermometers?
Answer: Mercury. Mercury, liquid at room temperature, was used in traditional thermometers.
8. Which gas, despite being a noble gas, is the second most abundant in Earth's atmosphere after nitrogen and oxygen?
Answer: Argon. Argon makes up about 0.93% of the atmosphere, more than any other noble gas.
9. What is the chemical symbol for tin?
Answer: Sn. Tin's symbol Sn comes from the Latin word 'stannum'.
10. What is the hardest known naturally occurring mineral after diamond on the Mohs scale?
Answer: Corundum. Corundum (rubies and sapphires) ranks 9 on the Mohs scale, just below diamond's 10.
11. Which element has the highest melting point of any element on the periodic table?
Answer: Tungsten. Tungsten has the highest melting point of all elements at approximately 3,422°C (6,192°F).
12. Marie Curie was awarded Nobel Prizes in which two distinct fields?
Answer: Physics and Chemistry. Marie Curie won the Nobel Prize in Physics (1903) and in Chemistry (1911), the only person to win in two different sciences.
13. Which scientist is credited with formulating the periodic law and creating an early periodic table that predicted undiscovered elements?
Answer: Dmitri Mendeleev. Dmitri Mendeleev devised the periodic table in 1869 and left gaps predicting elements like gallium and germanium.
14. What is the chemical symbol for the element gold?
Answer: Au. Gold's symbol Au comes from its Latin name aurum.
15. Which element has the atomic number 1, making it the lightest element?
Answer: Hydrogen. Hydrogen has atomic number 1 and is the lightest and most abundant element in the universe.
16. Elements in Group 18 of the periodic table are known by what name?
Answer: Noble gases. Group 18 elements, including helium, neon and argon, are called the noble gases.
17. Which element is the most abundant metal in the Earth's crust?
Answer: Aluminium. Aluminium is the most abundant metal in the Earth's crust, making up about 8% by mass.
18. Which scientist created the first widely recognized periodic table that predicted undiscovered elements?
Answer: Dmitri Mendeleev. Dmitri Mendeleev published his periodic table in 1869 and left gaps predicting elements such as gallium and germanium.
19. What is the only metal that is liquid at standard room temperature?
Answer: Mercury. Mercury is the only metal that is liquid at standard room temperature, with a melting point near minus 39 degrees Celsius.
20. Which element has the chemical symbol W?
Answer: Tungsten. Tungsten has the symbol W, derived from its German name wolfram.
21. Which pair of scientists discovered the radioactive elements polonium and radium?
Answer: Marie and Pierre Curie. Marie and Pierre Curie discovered polonium and radium in 1898 while studying radioactivity.
22. Which element is essential for the structure of all organic compounds and forms the basis of life on Earth?
Answer: Carbon. Carbon is the basis of all organic compounds because of its ability to form four stable covalent bonds.
23. In the periodic table, which property generally increases as you move from left to right across a period?
Answer: Electronegativity. Electronegativity generally increases across a period from left to right as nuclear charge increases.
24. Which element has the highest melting point of any known substance?
Answer: Tungsten. Tungsten has the highest melting point of any metal at 3,422 °C, making it the highest of all known elements.
25. Which element has the highest melting point of any pure element on the periodic table?
Answer: Tungsten. Tungsten melts at approximately 3,422°C, the highest melting point of any pure element.
26. The element with the highest melting point of any known substance is used extensively in incandescent light bulb filaments. What is it?
Answer: Tungsten. Tungsten melts at approximately 3,422°C, the highest of any pure element, making it ideal for filaments that must withstand extreme heat.
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