The Kon-Tiki expedition

The Norwegian adventurer Thor Heyerdahl first came in contact with the inhabitants and history of Oceania during his voluntary exile.

Yosemite National Park

Take a walk in the most popular national park in the US.

The twilight of industrial cities

There are various plans for eliminating brownfield sites in cities, but there are negative examples of the process as well.

The effect of concentration on chemical equilibrium

Examining the colour of cobalt(II) chloride in water and hydrochloric acid.

Frozen river

In winter months when it is cold enough the surface of even fast-flowing rivers can freeze.

Mixing substances, separating mixtures 2

Separating mixtures if one of the substances dissolves in water.

Endothermic reaction

Barium hydroxide reacts with ammonium nitrate while absorbing heat from their surroundings.

Horse Chestnut

Horse chestnut trees in parks and on playgrounds are a sight to behold. They are native to southeastern Europe and Southwest Asia.

Exothermic reaction

When heated, powdered sulphur reacts with powdered zinc, releasing heat.

The production of ethylene and its reaction with bromine water

Ethylene, produced by the heating of polyethylene, changes the colour of bromine water.

Mixing substances, separating mixtures 1

The method of separation of substances in a mixture depends on their different properties.

Like dissolves like

Non-polar substances dissolve in non-polar solvents while polar substances dissolve in polar solvents.

The effect of temperature on chemical equilibrium

Change in the colour of the cobalt(II) chloride solution due to heating and cooling.

Alcohol oxidation

Examining the colour of a piece of copper when exposed to heat and then ethanol vapour.

The viscosity of liquids

Have you ever thought about why honey flows so slowly from a spoon compared to water?

Bending a jet of water

A surprising phenomenon occurs when we hold a statically charged ruler near water flowing from a tap.

The Dolomites

These astonishingly spectacular rock towers and breathtaking panoramas make the Dolomites unique among all the mountain ranges in Europe.

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