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2. Presen
ted
by
Group

3. Leader: Jameel Joshua Salacan
Members:
Crystal Formaran
Kayecelyn Nimer
Rhona May Palma
Soliesa
Ryszard Recato

4. Parts of the Atom
Three parts of Atom
Protons, Neutrons and, Electrons
Protons and Neutrons are in the centre of an atom
which is called the nucleus. It is very small if you
compare it with the whole atom and it has almost all of
an atom’s mass. If an atom had a diameter of about 6
km the nucleus would only be as big as a tennis ball.
The rest of the atom outside the nucleus is mostly empty.
Electrons fly around in an atom very, very quickly. They
have almost no mass and travel around the nucleus
millions of times every second.

5. Example of an Atom

6. PROTON
PROTON is a subatomic particle found in
the nucleus of every atom. The particle
has a proton is a subatomic particle found
in the nucleus of every atom. The particle
has a positive electrical charge, equal and
opposite to that of the electron. If isolated,
a single proton would have a mass of only
1.673? 10-27 kilogram, just slightly less than
the mass of a neutron.

7. NEUTRON
NEUTRON is a subatomic hadrons particle
that has the symbol n or n0, no net electric
charges and a mass slightly larger than that
of a proton.

8. Example of an NEUTRON

9. ELECTRON
ELECTRON is a negatively charged subatomic
particle. It can be either free (not attached to
any atom), or bound to the nucleus of an atom.
Electrons in atoms exist in spherical shells of
various radii, representing energy levels. The
larger the spherical shell, the higher the energy
contained in the electron.

10. EXAMPLE OF AN ELECTRON

11. Atomic Number Z
"Atomic number" in German is "Atomzahl", so
the Z symbol for atomic number probably
comes from "Zahl" (number).
The Encyclopedia of symbols has a more
poetic interpretation:
"The letter Z is one of the signs for the highest
god in Greek mythology, Zeus. In modern
physics Z represents the greatest energy,
nuclear power, in its potential form, nuclear
charge."

12. Example of an Atomic numbe

13. Atomic Mass A
The atomic mass is the number of
portion and neutron in an atom
although all atoms of the same
elements have the same number of
protons, they sometimes have more
neutrons. Such atoms are called
isotopes

14. For example:
hydrogen has three isotopes most of
the time a hydrogen atom has one
proton and one neutron. Some time
you can find hydrogen isotopes that
have two or three neutrons, but they
too have only one proton.

15. People who discovered
Proton,
Neutron,
and Electron

16. Joseph John Thomson

17. James Chadwick

18. John Dalton- discovered the Atoms, Atomic mass A and
other element

19. The End
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