I'll give you 15 points cause that's all i've got, but i need it !

all mixtures:

contain only one kind of atom

are heterogeneous

are homogeneous

may have variable properties

Which is an example of a highly unstable isotope that is often used in fission reactions?

Select the correct answer. wax is a nonpolar substance. in which type of substance is it the most soluble?

How can liquids be seperated by density a the liquids are absorbed onto a paper b the liquids are turned into seperate vapors c the liquids are collected as they evaporate d the liquids are allowed to seperate into layers