2007-09-12 15:06:28 · 6 answers · asked by motoson 4 in Science & Mathematics ➔ Chemistry
No, not always.
A pure substance can be anything including a single element.
A pure compound is usually made up of a molecule so it is not necessarily one substance. It can be considered one, but if your definition of substance includes single elements then they are excluded from being a compound. Yea it is a little word play, but one of the strengths of the English language is that it is so descriptive. A substance can be anything, but a compound requires more than one item in it.
2007-09-12 15:15:57 · answer #1 · answered by Dan S 7 · 1⤊ 0⤋
no..i don't think so
a pure substance is just one substance..A chemical substance is a material with a definite chemical composition.
a pure compound is like Recrystallization. in chemistry, recrystallization is a procedure for purifying compounds. it's recreating a pure compound.
they carry the same idea but are different.
substance is different from (compound..which is two or more.)
2007-09-12 15:14:32 · answer #2 · answered by Σ|╧±┼┼┘ 3 · 0⤊ 1⤋
YES: PURE means "all the same type of
elemental atoms, like all iron atoms.
It includes: All the same type of formula units in a compound, like all NaCl units in a sample of salt.
They would all be pure because they are all the same.
2007-09-12 15:13:25 · answer #3 · answered by Pamela S 2 · 0⤊ 0⤋
pure substance (′pyu̇r ′səb·stəns)
(chemistry) A sample of matter, either an element or a compound, that consists of only one component with definite physical and chemical properties and a definite composition.
2007-09-12 15:14:12 · answer #4 · answered by ? 4 · 0⤊ 1⤋
no, a compound needs 2 or more elements while a substance can be any number of elements
2007-09-12 15:12:28 · answer #5 · answered by cronotknight 2 · 1⤊ 0⤋
No, unfortunately I cannot explain.
2007-09-12 15:11:23 · answer #6 · answered by Cynthia N 1 · 0⤊ 2⤋