The Universe was never smaller than an atom.
A proton is smaller than a nucleus, which is smaller than an atom, which is again smaller than a molecule.
Smaller
an electron is much much smaller than an atom. An electron is a portion of the nucleus in an atom.
Very small, very dense, very hot. Basically, all the matter that is currently in the Universe was initially concentrated in a space smaller than an atom.
An atom comprises an atomic nucleus with orbiting electrons. So the nucleus is smaller than an atom. To phrase it the opposite way, an atom is alwys larger than the nucleus (of the same atom of course!!)
The Universe. an atom
That's because the Universe really is expanding. It started as a "big bang", where all the matter and energy in the Universe was concentrated in a tiny space, smaller than an atom - at a tremendous temperature and pressure. From there it started expanding, and continues expanding to this day.That's because the Universe really is expanding. It started as a "big bang", where all the matter and energy in the Universe was concentrated in a tiny space, smaller than an atom - at a tremendous temperature and pressure. From there it started expanding, and continues expanding to this day.That's because the Universe really is expanding. It started as a "big bang", where all the matter and energy in the Universe was concentrated in a tiny space, smaller than an atom - at a tremendous temperature and pressure. From there it started expanding, and continues expanding to this day.That's because the Universe really is expanding. It started as a "big bang", where all the matter and energy in the Universe was concentrated in a tiny space, smaller than an atom - at a tremendous temperature and pressure. From there it started expanding, and continues expanding to this day.
A proton is smaller than a nucleus, which is smaller than an atom, which is again smaller than a molecule.
An atom is smaller than a compound because if an electron fits in an atom, and an atom is a part of a compound, it means a compound is bigger than an atom
it can get smaller than an atom
Smaller
smaller
Rubidium is a neutral atom in its elemental form. The rubidium ion, found in rubidium compounds, is smaller than a neutral rubidium atom.
Smaller
an electron is much much smaller than an atom. An electron is a portion of the nucleus in an atom.
An atom is millions of times smaller than a virus which is thousands of times smaller than a bacterium.
Neutrons, protons, and electrons make up an atom, so they are smaller.