Even when liquids change their shape, they always take up the same amount of space. Their volume stays the same. Examples of gases include steam, helium and oxygen. They are often invisible.

It turns out that any material, no matter what it is made of, can exist in one of three forms: solid, liquid or gas. These are categories of stuff that have certain observable properties.

In everyday life, we typically encounter water in one of three familiar states—solid, liquid or gas. But there are in fact ...

Through investigating solids, liquids, and gases and the phenomena of dissolving, evaporation, and condensation, students develop models to investigate matter at the particle level.

By linking theoretical predictions with neutron experiments, researchers have found evidence for quantum spin ice in the material Ce2Sn2O7. Their findings, which may inspire the technology of tomorrow ...

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.

The density of solid iron = 7.8 g/cm 3 The density of liquid iron = 6.9 g/cm 3 A substance evaporates when it changes from the liquid state to the gas state. Its particles move freely and are very ...