Question

Which physical properties can be used to identify an unknown substance?
A. Density
B. Volume
C. Length
D. Boiling Point

Answer 1

a and d

Answer 2

well A and D it seems to be here.... @NayelliPm3
You are already familiar with the most common physical
properties of matter. Some of these properties, such as
mass and volume, depend upon the specific object in
question. You cannot use mass to tell one substance
from another because two very different objects can
have the same mass—a kilogram of feathers has the
same mass as a kilogram of peanut butter, for example.
Other properties, such as density, can be used to
identify substances. They do not vary from one sample
of the same substance to another. For example, you
could see a difference between a kilogram of liquid soap
and a kilogram of honey by measuring their densities.
The physical properties described below can be used
to identify a substance.
Density The densities of wood, plastic, and steel are all different.
Scientists already have determined the densities of many substances.
As a result, you can conveniently compare the density of an unknown
substance with the densities of known substances. Finding any matching
densities will give you information about the possible identity of the
unknown substance. However, it is possible for two different substances
to have the same density. In that case, in order to identify the substance
positively, you would need additional data.