Neptunium can react with: O, Cl, F, Br, I, S, C, N, etc.
I take this to be what the properties of the new substance would be. That depends on what the two original substances were.
A mixture consists of substances that are physically blended but not chemically bonded.
Neptunium is dangerous due to it's radioactivity- it is similar to Uranium or Plutonium. It is likely to be chemically poisonous, but the radiation effects outweigh the chemical hazards. Neptunium is rarely found in a pure state, and results from decay of other radioactive materials, such as Plutonium and Americium.
Physically blending substances forms a mixture. Chemically combining substances forms a new substance, such as a compound.
Sodiumcloride (salt)
meth
a compound
Molecules.
atoms or molecules... somoething like that.
they share electrons
Mixture or solution
This is called a compound.
Mixtures are materials made up of two different substances which do not combine chemically.
A chemical reaction occur: the transfer of electrons between elements is involved.
Compound is formed by the chemical combination of two or more substances.
In a mixture compounds are not chemically bonded.
Any element; neptunium can form himself a critical mass.