No. a neutron is a subatomic particle found in the nuclei of all atoms except for hydrogen-1.
Your question is a bit confusing but a neutron is ALWAYS neutral. If a molecule loses an electron it moves toward the "positive charge" catagory, but it depends on the molecule.
The atomic mass of a molecule is equal to the number of protons plus the number of neutrons.
I'm not sure but it is either an atom, a molecule, a neutron, or a proton.
Heavy water is formed from an isotope of Hydrogen called Deuterium which is 1 proton and 1 neutron whereas a normal hydrogen atom is only 1 proton. The extra particle causes the atom to have more mass and causes it's density to be greater than that of water
When a neutron hits water, it interacts with the atoms in the water molecules. It bounces around, and transfers energy, much like a billiard ball. As a result, it loses energy and is slowed down. This makes water an excellent moderator for nuclear power plants, causing the neutron to slow down to the thermal range where it can interact with subsequent uranium or plutonium atoms. It is also possible that a water molecule (oxygen or hydrogen atom) can absorb the neutron, causing change in isotopic identity, fractioning the water molecule into radioactive oxygen and hydrogen.
The mass of an electron is the least among the options given here.
you already partly answered your own question. Neutrons.
Judy neutron
No. A neutron carries no charge.
There is no such thing as a "positive neutron" or a "negative neutron". A neutron is always neutral.
Heavy water is composed of deuterium, a heavier isotope of hydrogen with an extra neutron. This extra neutron increases the mass of the water molecule, leading to a higher density compared to regular "light" water. This is why it is called heavy water.
When Rutherford discovered the positive charge in an atom was concentrated in the nucleus, the neutron had yet to be discovered. There are no neutrons in Rutherford's model.