the thing that makes elements different is the fact that they all have different amount of protons, electrons and neutrons. They all, also, have different mass #'s.
two or more different elements
Its made from different elements
The difference is that technetium is radioactive.
The number of protons.
atom and elements are different because one atom makes an element and a element is a pure substance and a atom is a basic particle
two or more different elements
istopes have different numbers of neutrons and most of their elements have several istopes
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
their internal structure makes them behave in a similar way.
They don't have the same elements that make them. Hope it helped. =)
The water molecule contains two different elements chemically combined, which makes it a compound. A compound is a pure substance that contains two or more different elements chemically combined.
Because they have interlocking electrons as the different elements' electrons have been 'tangled'