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Learn how physicist found out that atoms are divisible.

In this lesson, you will learn about the characteristics of hydrogen sulphide.

Toxic compounds that cause acid rain and are utilised as industrial raw materials.

The most widely produced oxyacid that has a corrosive or passivating effect, depending on its concentration.

Learn what differentiates donkeys from horses.

A lesson about various compounds of nitrogen and oxigen.

Some processes cool the environment, while others heat it.

What challenges does the Sahel region face?

An element capable of self-ignition that plays an important role in the stiffness of our bones and in biological inheritance.

The age of Earth was debated for centuries by numerous outstanding scientists from different fields.

With this lesson, you can get to know yourself and your classmates better.

A strong acid that decomposes when exposed to light and heat.

For thousands of years, scientists have wondered if the events around us are determined by causality, randomness or supernatural powers.

In this lesson, you will learn about the mole, a useful predatory mammal that is often considered a pest.

It is important to know what dissolves in what.

Carbon atoms can form various types of bonds with other carbon atoms.

Learn about the fascinating history of Issyk-Kul lake.

Silicon is the second most abundant element on Earth. Its compounds are found in various minerals.

Learn about the process of diffusion and osmosis.

While most metals are grey, they are not at all unremarkable.

Corrosion is the greatest enemy of metals.

Scientists have debated the nature of heat for centuries. Learn about this fascinating scientific debate.

In this lesson, we are going to revise and learn vocabulary related to holidays and travelling.

This project demonstrates the reactions of several metals with acids.