aswer: protactinium-234 is more dang erous than uranium
I would say C but don't hold it against me
A compound is considered a pure substance meaning there is only one type of particle in the substance. A mixture is a combination of two or more different chemical pot compound or an element or substances. It is not a pure substance but I combination of multiple particles
Answer:
All substances can be characterized by their unique sets of physical and chemical properties.