Wednesday, September 29, 2010

Ions and Isotopes

Today we talked about what happens if you have a different amount of neutrons (isotopes) and a different amount of electrons (ions).

Then, we did a worksheet to distinguish ions from isotopes and be able to identify the amount of each subatomic particle (proton, neutron, electron) in each atom. 

1.     Al-27
a.     Protons:
b.     Neutrons:
c.      Electrons:
2.     B-12
a.     Protons:
b.     Neutrons:
c.      Electrons:
3.     Ne
a.     Protons:
b.     Neutrons:
c.      Electrons:
4.     H-1
a.     Protons:
b.     Neutrons:
c.      Electrons:
5.     Be^+2
a.     Protons:
b.     Neutrons:
c.      Electrons:
6.     Li-5
a.     Protons:
b.     Neutrons:
c.      Electrons:
7.     P^-3
a.     Protons:
b.     Neutrons:
c.      Electrons:
8.     Cl^-
a.     Protons:
b.     Neutrons:
c.      Electrons:

9.     B^+3
a.     Protons:
b.     Neutrons:
c.      Electrons:
10.                        O^-2
a.     Protons:
b.     Neutrons:
c.      Electrons:
11.                        Ga-63
a.     Protons:
b.     Neutrons:
c.      Electrons:
12.                        O-17
a.     Protons:
b.     Neutrons:
c.      Electrons:
13.                        N-13
a.     Protons:
b.     Neutrons:
c.      Electrons:
14.                        Li^+
a.     Protons:
b.     Neutrons:
c.      Electrons:
15.                        Na-22
a.     Protons:
b.     Neutrons:
c.      Electrons:
16.                        F^-
a.     Protons:
b.     Neutrons:
c.      Electrons:


The ^ symbol indicates a superscript rather than a dash or hyphen.

In addition to the worksheet, you were to work on pages 26-28 in your workbook.

Whether you stayed home in the inclement weather or are braving it today, be safe!

Tuesday, September 28, 2010

Element Chart

Today we started talking about matter and atomic theory. We filled out a chart for the first twenty elements it should look something like this.



Name
Chemical Symbol
Number of protons
Number of neutrons
Number of electrons
Atomic Number
Mass Number
Number of valence electrons
Lewis Dot Diagram
Hydrogen







Helium







Lithium







Beryllium







Boron







Carbon







Nitrogen







Oxygen







Fluorine







Neon







Sodium







Magnesium







Aluminum







Silicon







Phosphorous







Sulfur







Chlorine







Argon







Potassium







Calcium










The vocabulary for this section is as follows:

atom, atomic mass, atomic number, chemical properties, chemical symbol, electron, electron cloud, element, ion, isotope, matter, mass number, neutron, nucleus, physical properties, proton, quark, radioactivity, valence electrons

You can find a copy of the periodic table at http://ptable.com/