The Universe was never smaller than an atom.
A proton is smaller than a molecule, which is a group of atoms bonded together. The nucleus is smaller than both a molecule and an atom, as it is the central part of an atom where most of its mass is concentrated.
Smaller
An atom is smaller than a cell, and a molecule is smaller than both atoms and cells. Cells are composed of molecules, which in turn are made up of atoms.
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.
it can get smaller than an atom
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
A proton is smaller than a molecule, which is a group of atoms bonded together. The nucleus is smaller than both a molecule and an atom, as it is the central part of an atom where most of its mass is concentrated.
Smaller
smaller
Smaller
An atom is smaller than a cell, and a molecule is smaller than both atoms and cells. Cells are composed of molecules, which in turn are made up of atoms.
Neutrons, protons, and electrons make up an atom, so they are smaller.
The atom of an element is smaller than a molecule.
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.