Question

subatomic particles
from these experiments, scientists agree that all atoms are made up of electrons, protons, and neutrons.
each subatomic particle has a specific charge: electrons are negative, protons are positive, and neutrons are
neutral. every type of atom contains a different combination of these three subatomic particles.
not only are the charges different among the three subatomic particles, but their masses are as well.
electrons are much smaller than protons and neutrons. their relative mass is just 1/2,000 of the mass of a
proton or a neutron. this means that it takes 2,000 electrons to equal the mass of one proton or one
neutron! protons and neutrons have a similar mass to each other. protons and neutrons tend to always stay in
the nucleus while electrons can move between different atoms.
our understanding of the structure of the atom and how we model that structure has changed over time. we
have a better understanding of atomic structure today, but with new technology, we are still learning and
revising our model of the atom. scientists are constantly experimenting to learn more about subatomic
particles. this research helps us understand how what happens inside atoms can cause the changes we
observe in the world around us.
text chunk 4: write the main idea in your own words or images. (if you are not sure, reread and annotate.)

Explanation:

The text discusses subatomic particles (electrons, protons, neutrons), their charges, masses, locations in atoms, and how our understanding of atomic structure has evolved over time with ongoing research.

Answer:

Subatomic particles (electrons, protons, neutrons) have distinct charges and masses. Electrons are much smaller. Protons and neutrons stay in the nucleus. Our understanding of atomic structure has changed over time with research helping explain observed changes.