1.1.2: "Atomic Structure"

1.1.2: "Atomic Structure"

1. ATOMIC NUMBER

   • NUMBER OF PROTONS

2. MASS NUMBER

   • NUMBER OF PROTONS + NEUTRONS

3. NUMBER OF NEUTRONS

   • MASS NUMBER - ATOMIC NUMBER

4. CHARGES

   • PROTONS = +1
     • NEUTRONS = 0
       • ELECTRONS = -1

5. MASSES

   • PROTONS = 1
     • NEUTRONS = 1
       • ELECTRONS = 1/2000

6. ISOTOPES

   • ONE OF TWO OR MORE FORMS OF THE SAME ELEMENT, CONTAINING THE SAME NUMBER OF PROTONS BUT A DIFFERENT NUMBER OF NEUTRONS IN THEIR NUCLEI.

7. IONS

   • A POSITIVELY OR NEGATIVELY CHARGED ATOM OR GROUP OF ATOMS.

8. ELECTRONS ORBIT THE NUCLEUS IN SHELLS

9. THE NUCLEUS IS TINY COMPARED TO THE TOTAL VOLUME OF THE ATOM.

10. THE NUCLEUS MAKES UP MOST OF THE ATOM'S MASS

11. MOST OF AN ATOM IS JUST EMPTY SPACE

12. THE NUCLEUS IS IN THE MIDDLE OF THE ATOM