Heterogeneous Mixtures
Usually mixtures are easiest to separate into their substances.
Elements
Various chemical compounds eg Hydrogen Peroxide.
by using a magnet
Elements in Group I and II can easily bend, but cannot breakdown easily. So as Mg is in Group II, it can bend easily but does not break easily.
Yes, americium is a fairly reactive chemical element.
Yes they can be easily separated.
It means that elements can be separated by their chemical simulatries as they are on the periodic table of elements.
Thorium can be separated from other elements by solvent extraction with tributylphosphate.
Neptunium is an individual element; isotopes of neptunium are not separated.
yes, they can be easily separated however some can't.Think of sererating it and se if it make sense.So mixtures can be easily separated and don't lose their individual properties
No. If two elements can be separated by a physical process then they are simply mixed.
Compounds can be separated into their constituent elements only by a decomposition reaction.
Usually mixtures are easiest to separate into their substances.
Elements
nitrogen aluminum and zinc are elements therefore they cannot be separated into several elements
The simple reason is that least reactive elements are mostly found in their native state while reactive elements are found in combined state (in form of their compounds). It is easier to extract any element in it's native or elementary form. Such elements can be easily separated from their ore. They are separated by using physical processes. Reactive elements need to be extracted from their minerals through chemical processes which are more expensive and tedious.