PURE SUBSTANCES:
• Pure Substance = contains only one kind of particle throughout
• Nearly all of the pure substances we encounter in our lives
have been made pure by human beings (from a raw material =
unprocessed material of any kind)
ex) sugar beet/cane → refining process → table sugar
(raw material)
ex)
bauxite
(raw material)
(pure substance)
→ refining process → aluminum foil
(pure substance)