Your question is a little off, because atoms do not contain different elements; any given atom is an element, for example, a hydrogen atom, an oxygen atom, etc. An atom by definition is the smallest possible amount of a specific element. If you would like to know why atoms are a specific element, that is determined by the number of protons in the nucleus.
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
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
ISotopes
What is an atom
The number of protons.
Dalton predicted that the atom of any element are different from the atoms of all other elements.
An atom is an element. Every atom has a certain amount of protons, neutrons and electrons and these are what define which element that atom is.
Since you have isotopes of elements. Isotopes are elements with different number of neutrons hence why the different atomic masses for the same elements.
No, the number of protons defines what element an atom belongs to. If two atoms are of different elements then they have different number of protons.
they have a natural tendecy to become stable that's why different elements under different conditions react to form different elements or compounds.
Carbon and oxygen or two different elements, with different masses.
Isotopes of elements have different atomic mass'.