The document discusses the basic subatomic particles that make up atoms: protons are positively charged particles found in the nucleus with a mass of 1.672 x 10−24 grams, neutrons are neutral particles found in the nucleus with a mass of 1.675 x 10−24 grams, and electrons are negatively charged particles found outside the nucleus with a mass of 9.109 x 10−28 grams.

1. By: Steven R. Repe

2. the basic unit of a chemical element and in matter.

4. found in the nucleus
mass in grams 1.672 𝑥 10−24
a positively charged particle

5. found in the nucleus
mass in grams 1.675 𝑥 10−24
no charged particle

6. found outside of nucleus
mass in grams 9.109 𝑥 10−28
negatively charged particle

8. ATOM
the basic unit
of element
and matter
Positively
charged particle
and also found in
the nucleus of an
atom.
No charge and
can be found in
the nucleus of
the atom
Negatively
charged particle
and found
outside of the
nucleus and
PROTON
NEUTRON ELECTRON