Chemistry: Elements, Compounds, and Mixtures (2nd Edition) (1983) is a 20-minute educational film from the *Chemistry Series* ...

Each element has unique chemical properties and is fundamental to understanding the composition and behavior of matter in the universe.

Since real gold can be found on the periodic table, that makes it an element. Elements are a type of matter known as a pure substance. Elements cannot be broken down into simpler substances. They are ...

A massive clump of dark matter in the Perseus galaxy cluster is linked to its core by a bridge of dark matter, evidence of a ...

Atomic and molecular interactions with photons is the study of the way in which the basic elements of matter interact with packets of electromagnetic energy. This interaction is determined largely ...