Students explore the attractions and motion of atoms and molecules as they experiment with and observe the heating and cooling of a solid, liquid, and gas.

Understanding the behavior of tiny droplets in our cells could aid the search for new treatments. A team of Leiden ...

The units of density depend on the units used for mass and volume. The most commonly used units are grams per cubic centimetre (g/cm³) or kilograms per cubic metre (kg/m³). These balloons are ...

If the particles are heated up, they gain energy and can move more freely, changing from a solid to a liquid, for example. This basic model is, however, just that: there are many, many more states ...

Here is a new material capable of behaving like a liquid under low pressure, then solidifying instantly upon impact.