Plutonium is easily dissolved by concentrated HCl, HClO4 or HI.
Plutonium is a chemical element, not a compound or mixture.
mixture if its dissolved by water.
Dissolved oxygen is a gas that is dissolved in water, so it is not a compound or mixture itself. It is a single substance dispersed uniformly in the water.
heterogeneous mixture because it is dissolved by water
Dissolved sugar is a homogeneous mixture. While sugar is a pure substance in its solid form, when dissolved in water it forms a mixture where the sugar molecules are evenly distributed throughout the solvent.
Plutonium is an element with the chemical symbol Pu and atomic number 94. It is a radioactive metallic element that occurs in varying isotopic forms.
Mostly uranium. Plutonium can also be used, often a mixture of uranium and plutonium oxides (MOX) is used.
A solution is a mixture of a liquid and a liquid, or liquid and dissolved solids.
A clear mixture is a homogeneous mixture where the components are evenly distributed and the mixture appears transparent or see-through. This often occurs when substances are dissolved in a solvent to form a solution, such as sugar dissolved in water.
solute
solution
Salt dissolved in water is a solution, not a mixture. The result is called a saline solution.