In which of the following years did Antoine Lavoisier discover the law of conservation of mass and state that mass is conserved in a chemical reaction?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 1789.
Antoine Lavoisier discovered the law of conservation of mass in 1789. In his groundbreaking work, Lavoisier stated that mass is neither created nor destroyed in a chemical reaction. This principle became a fundamental concept in chemistry, laying the foundation for modern chemical reactions. Lavoisier's careful experiments and observations led to the understanding that the mass of the reactants in a chemical reaction equals the mass of the products, ensuring the conservation of mass throughout the process.