Protons, neutrons, and electrons are the three main subatomic particles. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons. The atomic number identifies the number of protons in an atom's nucleus, while atomic mass refers to the total number of protons and neutrons.

1. SUBATOMIC
PARTICLES

2. SUBATOMIC PARTICLES
Particles that are smaller than atom.

3. ThreeMainSubatomicParticles
 Protons
 Neutrons
 Electrons

4. PROTONS AND NEUTRONS
 All protons are identical to each other,
and all neurons are identical to each
other.
 Protons have a positive charge (+).
 Neutrons have no electrical charge.

6. ISOTOPES
 Atom of the same element that
have the same number of
protons but different number of
neutrons.

8. ELECTRONS
 Have negative charge (-).
 They are moving so fast and the
path that they travel is not the
same each time.

10. ATOMICNUMBER AND ATOMIC
MASS

11. THEEND