Atoms

Atoms

1. Nucleus

   • Protons and neutrons cluster together in the center.

2. Mass (mass number)

   • Total number of the protons and neutrons.

3. Atomic Number

   • The number of protons in the nucleus.

4. Isotopes

   • Stable
     • Nuclei do not change spontaneously.
   • Atoms of the same element with different number of neutrons.

5. The smallest unit of an element

   • Retains all the chenical properties of that element.

6. Nucleus

   • Have no change
     • 0

7. Protons

   • Each carry a single positive charge
     • +1

8. Electrons

   • Each carry a single negative charge.
     • -1