2.
systematically named propan-2-one
Organic compound with the formula (CH₃)₂CO.
It is a colorless
Volatile
Flammable liquid
Simplest ketone.
Acetone
3.
Polystyrene is a petroleum-based plastic.
Styrofoam, which is actually the tradename of a
polystyrene foam product.
light-weight material, about 95% air
very good insulation properties
STYROFOAM?
4.
Polystyrene is just a random mass of long strands
Certain compounds are added to the styrene which
can link two or more polymer strands together.
As the polystyrene is being made, gases are blown
into the mixture.
This causes the polymer to foam up, forming the
Styrofoam.
chlorofluorocarbons (CFCs) as the so-called "blowing
agents."
5.
When Styrofoam is placed in acetone, the long
polymer strands are dissolved
Releasing the trapped air and causing the structure
to disintegrate.
The insoluble cross-linked parts of the polymer keep
the polystyrene from dissolving entirely,
