2/14 - Continue Chemistry, get HW#1

Today we continued the chemistry section, ad you received HW #1. You were able to work on it in class.

Period 2 did NOT get the HW, and it is not due for them until Tuesday (2/20).

This is HW#1:


HOMEWORK #1
1. Draw an atom of Helium.
2. Write down the atomic number of the following:
---Manganese, Fluorine, Radon, Potassium, Gold
3. How many protons do each of the elements listed in #2 have?
4. Write down the number of protons, neutrons, and electrons in the following:
--Co+3
--Sn+4
--Ca
--Nb (with a Mass# = 90)
--S-2
5. Identify which of the ones listed in #4 are isotopes.