1. Introduction to Chemistry

Click the correct answer.

Which of the following metals was considered the purest according to alchemy?

Potassium

Silver

Sodium

Gold

Click each box on the left and then click the matching box on the right.

Match the columns.

Dmitri Mendeleev

Antoine Lavoisier

John Dalton

Niels Bohr

Ernest Rutherford

Modern periodic table of elements

Discovery of the role of oxygen in combustion

Law of partial pressures

Bohr atomic model

Radioactive half-life

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