The exact question how are the following terms related -

subatomic particels and atomic mass unit.

The heading on the page is review and reinforcement structure of an atom - the three main subtomic particles are the proton, the nuetron and the electron.

Since this is not my area of expertise, I searched Google under the key words "'subatomic particles' 'atomic mass unit'" to get these possible sources:

http://misterguch.brinkster.net/subatomic%20particles.html
http://www.scienceclarified.com/Sp-Th/Subatomic-Particles.html
http://environmentalchemistry.com/yogi/chemistry/dictionary/A01.html
http://72.14.253.104/search?q=cache:zZZ4T-MVKl4J:schools.sisd.net/mech/documents/Waxman/ChemUnit3.ppt+%22subatomic+particles%22+%22atomic+mass+unit%22&hl=en&ct=clnk&cd=5&gl=us&client=safari
http://72.14.253.104/search?q=cache:tFSdG_d716IJ:staffweb.psdschools.org/janastas/Chemistry/GChemNotes/AtomicStructure.ppt+%22subatomic+particles%22+%22atomic+mass+unit%22&hl=en&ct=clnk&cd=6&gl=us&client=safari

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.

Subatomic particles and atomic mass units are related because atomic mass units (amu) are used to measure the mass of subatomic particles.

In the context of the structure of an atom, there are three main subatomic particles: protons, neutrons, and electrons.

Protons have a positive charge and are located in the nucleus of an atom. Neutrons have no charge and are also found in the nucleus. Electrons, however, have a negative charge and orbit around the nucleus in specific energy levels called electron shells.

The mass of subatomic particles is extremely small, so it is more convenient to express their masses relative to a standard unit called the atomic mass unit (amu). One atomic mass unit is defined as one-twelfth the mass of a carbon-12 atom.

To understand how subatomic particles and atomic mass units are related, you need to know the following:

1. Protons and neutrons both have a mass of approximately 1 amu. Therefore, it is common to approximate the atomic mass of an atom by adding the number of protons and neutrons.
Example: Carbon-12 has 6 protons and 6 neutrons, so its atomic mass is approximately 12 amu.

2. Electrons have a much smaller mass compared to protons and neutrons. As a result, their contribution to the overall atomic mass is negligible.

In summary, subatomic particles such as protons and neutrons have masses that are measured in atomic mass units (amu). This allows us to conveniently compare and calculate the total atomic mass of an atom or molecule based on the number of protons and neutrons it contains.