Tuesday October 21 How many protons does Sulfur (S) have?

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Presentation transcript:

Tuesday October 21 How many protons does Sulfur (S) have? What is the atomic number of Calcium (Ca)? How many electrons does Sodium (Na) have? What is the chemical symbol for Potassium? What element has the chemical symbol He?

Today’s Planner Atoms & Periodic Table Practice

Today’s Goal I can draw and label an atom.

Today’s Plan Review homework Number of Neutrons Practice drawing atoms

Neutrons - Atomic Number (Protons) # of Neutrons Atomic Mass (Protons + Neutrons) - Atomic Number (Protons) # of Neutrons

How many neutrons? 35.45 - 17.0 18.45 17 Cl 35.45 18 neutrons

How many neutrons? 14.007 - 7.0 7.007 7 N 14.007 7 neutrons

How many neutrons? 39.098 - 19.0 20.098 19 K 39.098 20 neutrons

How many neutrons? 26.982 - 13.0 13.982 13 Al 26.982 14 neutrons

How many neutrons? 6.941 - 3.0 3.941 3 Li 6.941 4 neutrons

How many neutrons? 15.99 - 8.0 7.99 8 O 15.99 8 neutrons

Now we can draw the nucleus 8 O 15.99 How many protons? 8 How many neutrons? 15.99 – 8 = ~ + + + + + + + +

Now we can draw the nucleus 2 He 4.00 How many protons? 2 How many neutrons? 4.00 – 2 = ~ + +

Now we can draw the nucleus 3 Li 6.941 How many protons? 3 How many neutrons? 6.941 – 3 = ~ 4 + + +

Now we can draw the nucleus 6 C 12.01 How many protons? 6 How many neutrons? 12.01 – 6 = ~ + + + + + +

Now we can draw the nucleus 9 F 18.998 How many protons? 9 How many neutrons? 18.998 – 9 = ~ 10 + + + + + + + + +