Is uranium an element or a compound or heterogeneous mixture or a homogeneous mixture?

Answer 1

Uranium ore is a heterogeneous mixture

Answer 2

The question of whether uranium is used in its pure form depends on what you mean by uranium. There are several isotopes of uranium, ranging from 217U92 to 242U92. Most of these do not exist in natural state, due to their short half-life. Two isotopes, 235U92 and 238U92, have half-lives long enough to exist in nature. Of the two, 235U92 is the most useful for nuclear energy and warfare due to its fissionability. Normally, 235U92 exists in about a 1.0% or so ratio to 238U92, and this is not a useful ratio. To make a power plant, we typically raise the ratio to 5%. To make a weapon, we typically raise the ratio to the high 90's, say 97% to 99%, although highly enriched 235U92, or HEU, as it's known, can also be used in specialized power plants or other research type reactors. Even then, 100% 235U92 is extremely difficult, if not impossible, to produce.

The final answer, given all the above, is no, uranium is not used in its pure form.

Answer 3

Uranium is a natural element, a metal; it is not a mixture of substances, but a mixture of three natural isotopes (234U, 235U and 238U).

Answer 4

Uranium is a element and is in fact a pure substance.

Answer 5

Uranium is an element. It is a naturally occurring, radioactive element with the atomic number 92 and symbol U.

Answer 6

Uranium is an element

Answer 7

Uranium is an element.