Iraq is located on the continent of Asia. It is a part of the Middle East, a region of Asia and North Africa that nurtured some of the oldest human cultures on the planet. Continue Reading
salt is a pure substance because it is created using natural products that were drawn from our environment. in the refining process, there are no chemicals or other new substaâ¦nces added to the original products that would make it a mixture.
A pure substance: 1  cannot be separated into 2 or more substances by physical or mechanical means. 2  is homogeneous, ie, has uniform composition throughout the whole sample. 3  its properties are constant throughout the whole sample. 4  its properties do not depend on how it is prepared or purified. 5  has constant chemical composition.