Steel is a mixture of elements but it is mostly iron, and it is also magnetic. The other metal elements are not magnetic. Metals react with oxygen to produce compounds called metal oxides.

Chemistry: Elements, Compounds, and Mixtures (2nd Edition) (1983) is a 20-minute educational film from the *Chemistry Series* by Coronet Instructional Films, distributed by Simon and Schuster.

Like real gold and Fool’s gold. But what if my sample has several different types of elements and compounds all mixed together? Matter can also be classified as a mixture. Mixtures can either be ...

that water is a chemical compound made up of two hydrogen atoms and a single oxygen atom or H 2 O. For thousands of years, ...

Most studies conducted on these elements have traditionally been done one-compound-at-a-time or extrapolated from less toxic and non-radioactive surrogates, like lanthanides, that are safer to ...