Calcium carbonate (CaCO₃)

Limestone is a widely and diversely used material.

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Is all that chemistry dangerous?

This lesson helps to explain chemical reactions.

Hydrogen-iodide (HI)

A colorless, heavier-than-air gas with a pungent odor.

Hydrogen-fluoride (HF)

One of the hydrogen halides, a highly aggressive substance - it even attacks glass.

Nitrate ion (NO₃⁻)

A compound ion, the main source of nitrogen for plants.

The reaction between aluminium and iodine

Catalysed by a few drops of water, aluminium reacts with iodine.

The process of glass production

Glass items are an integral part of everyday life. But how are they made?

Carbon dioxide (CO₂) (intermediate)

Colorless, odorless, heavier-than-air gas. Necessary for the photosynthesis of plants.

How can we group chemical reactions?

The experiments in this lesson will introduce you to the various types of chemical reactions.

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