Wilhelm Ostwald along with his collaborators invented physical chemistry, the biggest discoveries were catalysis, chemical equilibrium and chemical reaction rate.
In 1918 Rutherford made an important discovery - proved that nucleus of nitrogen in the effect of alpha particle can turn into oxygen which confirmed that one chemical element can turn into another. On the research of the interaction of Alpha particle and hydrogen atom, Rutherford discovered the artificial radioactivity.
Chemistry is present in every aspect of life. We perform various chemical activities semiconsciously such as breathing, food digestion and circulation. Chemistry is a part of human existence.
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