- 1. The periodic table is a systematic arrangement of the known chemical elements, organized based on their properties and atomic structure. It reveals fundamental truths about the building blocks of the universe and highlights the interconnectedness of all matter. By studying this table, scientists can uncover hidden patterns and relationships that govern how elements behave and interact. The periodic table is a powerful tool that continues to unlock mysteries of the natural world and guide discoveries in chemistry and physics, providing invaluable insights into the nature of our existence.
Who is credited with creating the first periodic table?
A) Max Planck
B) Niels Bohr
C) Marie Curie
D) Dmitri Mendeleev
- 2. Which element is the lightest on the periodic table?
A) Hydrogen
B) Helium
C) Lithium
D) Oxygen
- 3. What is the atomic number of carbon?
A) 20
B) 8
C) 14
D) 6
- 4. What is the most abundant element in the Earth's crust?
A) Iron
B) Aluminum
C) Oxygen
D) Silicon
- 5. What group of elements are known as the 'noble gases'?
A) Group 1
B) Group 14
C) Group 18
D) Group 17
- 6. Which element has the chemical symbol 'Na'?
A) Neon
B) Sodium
C) Nickel
D) Nitrogen
- 7. What is the second most abundant element in the universe?
A) Helium
B) Carbon
C) Oxygen
D) Hydrogen
- 8. Which element is used in fluorescent light bulbs?
A) Mercury
B) Silver
C) Lead
D) Copper
- 9. What is the atomic symbol for iron?
A) Ir
B) In
C) I
D) Fe
- 10. What is the lightest metal on the periodic table?
A) Lithium
B) Aluminum
C) Potassium
D) Sodium
- 11. Which element is essential for human life and is found in hemoglobin?
A) Calcium
B) Iron
C) Magnesium
D) Sodium
- 12. What is the rarest naturally occurring element on Earth?
A) Astatine
B) Francium
C) Radon
D) Radium
- 13. Which element has the atomic number 79?
A) Iron
B) Copper
C) Gold
D) Silver
- 14. What is the lightest halogen element?
A) Fluorine
B) Bromine
C) Iodine
D) Chlorine
- 15. What is the most reactive metal on the periodic table?
A) Sodium
B) Lithium
C) Potassium
D) Francium
- 16. What is the atomic number of gold?
A) 77
B) 83
C) 79
D) 81
- 17. Which element is used in making computer chips?
A) Iron
B) Carbon
C) Silicon
D) Gold
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