Chemical History | MCQs

Explanation

The word "atom" comes from the Greek word "atomos," meaning "indivisible."

It was coined by ancient Greek philosopher Democritus to describe the smallest, indivisible particles that make up matter.

Explanation

Dmitri Mendeleev is known for being the first scientist to arrange elements into a periodic table.

He organized the elements by their atomic mass and other chemical properties.

Mendeleev's periodic table was published in 1869.

Explanation

 Sir William Ramsay, a Scottish chemist, is credited with the discovery of the noble gases.

He first discovered argon and later found neon, krypton, and xenon. 

Explanation

Friedrich Wöhler synthesized urea from ammonium cyanate in 1828, marking the birth of organic chemistry.

This experiment disproved the belief that organic compounds could only be made by living organisms.