Glucose and fructose are monosaccharides that contain carbon, hydrogen, and oxygen. Glucose contains four asymmetrical carbon atoms and is an aldose, while fructose contains a ketone group and is a ketose. Both glucose and fructose are not toxic but are combustible, with powdered glucose being extremely flammable and capable of producing heat when burned.

1. Structure and properties of
glucose and fructose

9. Chemical Properties – Glucose is the name of a particular chemical compound.
The only constituent of glucose is glucose.
Monosaccharides cannot be broken into simple CHO upon hydrolysis and
they have 3 to 7 carbon atoms in their molecules.
Oligosaccharides are made up of 2 to 10 units of monosaccharides or simple sugar.
The general formula of polysaccharides is (C6H10O5)n; here. n = 100-300
The monosaccharides which have aldehyde (—CHO) group in their structure is
called aldose and the monosaccharides which contain ketone (>C=O) group in their
structure is called ketose. Glucose, riboses are aldose: fructose is a ketose.
Glucose contains four asymmetrical carbon atoms in its structure. If not you mean
which subatomic particles create the atoms in a glucose molecule: protons,
neutrons, electrons.
It is not toxic and highly combustible (powdered glucose is extremely flammable).
I can produce heat when it burns. And it flimsily dispersed particles can become
volatile when they are exposed to air.