Year 9 Chemical Reactions Properties, Equations, And Energy Changes Practice Test

Which scientist is known for standardizing chemical symbols and formulas?

Jöns Jakob Berzelius Dmitri Mendeleev Antoine Lavoisier Marie Curie

Correct Answer:

Dmitri Mendeleev

Explanation:

Standardizing chemical symbols and formulas means creating a clear, universal way to write elements and compounds so scientists can share and compare results. That system was developed by Jöns Jakob Berzelius. He introduced the modern chemical symbol system—one or two letters for each element—and used subscripts to show how many atoms of each element are present in a compound. This laid the foundation for the notation we still use today. Dmitri Mendeleev is famous for organizing the periodic table and predicting properties of undiscovered elements. Antoine Lavoisier helped shape chemical naming conventions and promoted the law of conservation of mass. Marie Curie made pivotal discoveries in radioactivity.

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