In a gas, like helium, particles are widely spaced ... There are probably lots. Some common examples could be clothing, sometimes made from cotton or polyester. A building is made from solid ...

Substances can exist in three states of matter - solid, liquid and gas. All substances are made from particles, and the forces between the particles are different in solids, liquids and gases.

These gases are used by medical professionals to diagnose and treat a variety of illnesses in their patients. Medical gases such as hydrogen, oxygen, nitrogen, carbon dioxide, nitrous oxide, and ...