Protons and Electrons
Moleculez, then atoms, then neutrons, protons, and electrons. Electrons are fundamental, but neutrons and protons are composed of quarks and gluons. However, it's not possible to have 'bare' quarks due to something called color confinement.
Protons and Electrons
a chemical reaction
The smallest particle of an element would be an atom. Any smaller and it would not be an element, but something more basic. Atoms are made of Protons, Neutrons, and Electrons. Protons and Neutrons are made of Quarks, Leptons, and Bosons.
To understand, you first need to understand the difference between an element and a compound. An element is any element from the Periodic table. For example, oxygen. A compound is a substance in which more than one element are bonded chemically. This is not to be confused with a mixture, which is simple a mixture of substances with no chemical bonding. An example of a compound would be water, consisting of hydrogen and oxygen bonded together.Now that we've established to difference between an element and a compound, we can explore what the smallest particle of each is. The "smallest particle" is the smallest you can go while still keeping the properties of the original substance.The smallest particle of an element would be an atom. But when dealing with compounds, if you break them down to atoms, then those atoms don't have the same properties as a compound. The smallest particle of a compound is a molecule. In our example of water, a water molecule consists of two hydrogen atoms and one oxygen atom, chemically bonded together. The molecule, consisting of three atoms, has the chemical properties of water. But if you break it down so you just have an oxygen atom and two hydrogen atoms, none of them would have the properties of the original compound (water).Thus, the smallest particle of an element is an atom, and the smallest particle of a compound is a molecule. The difference between the two is that an atom is an atom, and a molecule is two or more atoms chemically bonded.
That would be AN ATOM.
The basic unit of matter is an atom. It is also the smallest part of an element that retains all the properties of that element. Since your question ended with an... I would say element fits best.
He asked the question: If you break a piece of matter in half, and then break it in half again, how many breaks will you have to make before you can break it no further? Democritus thought that at some point one would get to a smallest possible bit of matter. He called these basic matter particles, atoms. Atom in Greek means "indivisible".
An atom
No. The smallest particle of an element that has the properties of that element is an atom.
The smallest basic particle of an element is an atom. Atoms and molecules formed of them are the smallest particles that have the physical and chemical properties of the element. Atoms, however, are made of smaller particles: electrons, protons, and neutrons, of which the electron is the smallest. There are various supplementary particles that connect or interact with them (e.g. mesons). These atomic particles are formed by the combination of constituent particles called quarks, which do not normally exist in uncombined forms (where, oddly, they would have much greater mass than the particles they constitute).
If the substance is an element, the smallest will be an atom. If it is a compound, then that would be a molecule.
No It is not true that atoms are the smallest particles in the planets. The smallest particles are electrons, protons, neutrons, and others.
For an element, it would be an atom. For a molecular substance, it would be a molecule. If it is an ionic compound, it would be a formula unit.
yes.
Lithium is an element. As such, it has no other substance in it, it is pure lithium. If you wished to analyse it further, you would have to break it down into subatomic particles.
A molecule is the smallest particle of a "compound" being that compounds are made up of more than one atom. The smallest particle of any "chemical element" that retains its properties would be the atom.
It would be inaccurate because atoms are made of subatomic particles, which actually make up the element. These subatomic particles have either a positive, negative, or neutral charge. The positively charged particles are called protons. The negatively charged particles are called electrons. The neutral particles are called neutrons. The protons and neutrons are grouped together in the nucleus of an atom, with the electrons orbiting around.
That would be the individual atoms.
No. That would be an "atom".