For certain gases, this turned the gas into a liquid. In the next step, they released the pressure on the cold liquid, usually through a valve into another container. As it partially evaporated ...

Nitrogen is the most abundant gas in our air. Molecules of nitrogen are barely attracted ... The freezing point is −210 °C. To get an idea of how cold liquid nitrogen is, watch what happens to a ...

Progress towards peace in Ukraine is slow to the point of being imperceptible.  Worse, European gas inventories are sharply ...

Hydrogen must be stored at extremely cold temperatures, approximately -253°C, to remain in liquid form. During storage and refueling, some of this hydrogen naturally escapes as boil-off gas ...

Dewar was interested in cryogenics, the science of extreme cold and in 1898 he was the first person to make liquid hydrogen, which at the time was the coldest substance ever produced. Cooling gas ...

It’s not easy to see it happen in a solid but let’s try it for a liquid and a gas. See if you can tell that heat makes molecules move! Place some ice in a large cup and add water to make ice water.