Chemistry

When you enter and become familiar with the wonderful world of chemistry, you may no longer be surprised by the various chemical phenomena hidden in daily life, no longer be puzzled by the chemical questions that once lingered in your mind, and no longer think that "manipulating" atoms and molecules is a fantasy.

Who proved that matter is composed of molecules?

The ancient Greek philosopher Democritus was adept at starting his thinking from everyday phenomena (such as soup turning salty, smelling flowers, and fish swimming in water), and eventually concluded that everything in the world is composed of tiny...

What is a molecule? What is an atom?

The world is composed of tens of millions of substances. Then, molecules are compared to the smallest "bricks" that make up matter. The characteristics of molecules are introduced: they can exist alone, have chemical properties, are extremely small and...