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Substance
[
Biology
- Chemistry ] |
Dictionary of botanic
terminology - index of names |
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The substance is
the stuff of which an object or body
consists; any natural or
synthetic matter or material,
whether in solid or liquid form or in the form of a gas or vapour that
which has mass and occupies space; Any
chemical compound. This
includes chemicals and biological
materials. |
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Natural substance: A
substance in its natural state
produced by natural processes.
Synthetic or artificial
substance: Any matter or material obtained by a process in
chemistry: |
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Biogenic (or
biological) substance
[
Biochemistry
] |
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Chemical substance
[ Chemistry
] |
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A chemical substance
is any matter or material used in or obtained by a
process in
chemistry |
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• A chemical compound is a substance in the natural state or
obtained by any production process, consisting of two or more chemical
elements that are chemically combined in fixed proportions.
• A chemical element is a substance that cannot be divided or
changed into different substances by ordinary chemical methods. The
smallest particle of such an element is an atom, which consists of
electrons centered around a nucleus of protons and neutrons.
• A molecule is the smallest particle of an element or compound
that retains the characteristics of the element or compound.
• An ion is an atom or group of atoms with a net electric charge,
having lost (cation) or gained (anion) an electron.
A biogenic substance is a substance produced by plants ,animals, or
microorganism by natural processes. The matter; material of which a
living organism is made; |
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