Elements, Compounds, and Mixtures (Junior Cert Science): Flashcards

Pure substance, one type of atom, can't be broken down

One atom of that element

Organizes all known elements

Na from Latin natrium

Two or more elements chemically combined

Two hydrogen atoms joined to one oxygen atom

Completely different from constituent elements

Substances mixed together, not chemically combined

Mixture: no bonds; Compound: chemically bonded

Iron sulfide ($FeS$), black, non-magnetic