9. Solid is one of the four
fundamental states of matter.
It is characterized by structural
rigidity and resistance to
changes of shape or volume.
10. PHYSICAL PROPERTIES
Physical properties of elements and
compounds which provide conclusive
evidence of chemical composition
include odor, color, volume, density,
melting point, boiling point, heat
capacity, physical form and shape at
room temperature, hardness, porosity,
index of refraction and many others.
13. A liquid is a
nearly incompressible fluid that
conforms to the shape of its
container but retains a constant
volume independent of pressure.
As such, it is one of the four
fundamental states of matter, and
is the only state with a definite
volume but no fixed shape.
14. PHYSICAL PROPERTIES
Liquids have fixed volume
but no fixed shape.They have
fixed volume but they do not
have fixed or definite shape.
Liquids flow from higher to
lower level.
17. Gas is one of the four fundamental
states of matter. A pure gas may
be made up of individual
atoms, elemental molecules made
from one type of atom
or compound molecules made
from a variety of atoms .A
gas mixture would contain a
variety of pure gases much like
the air.
18. PHYSICAL PROPERTIES
Gases have three characteristic
properties:
(1) they are easy to compress,
(2) they expand to fill their containers,
and
(3) they occupy far more space than the
liquids or solids from which they form.
