April 18, 2011

Hello, hello, hello! What a beautiful, nice sunny day it is! Today we had no rain at all with the sun shining above! So let's get straight down to what we learned today..... Today it was basically a review of what we learned in grade 9, ahhh grade 9 seems so long ago, gosh, ok right getting off topic here..... today we learned about......

Atomic Structure!

- The subatomic particles are: protons, neutrons and electrons.
 ˜Proton:
Symbol = (we use the P)
Relative Mass = 1
Electric Charge = +1
Location in the Atom = nucleus

 ˜Neutron:

Symbol =
Relative Mass = slightly bigger than 1
Electric Charge = 0
Location in the Atom = nucleus

 ˜Electron:

Symbol =  (we use the E)
Relative Mass = 0
Electric Charge = -1
Location in the Atom = cloud surronding the nucleus

- In a Neutral atom, # of Protons = # of Electrons

Atomic Number (Z): The proton number
- The Atomic Number (Z) is the number of protons found in the nucleus of an atom.
- Atoms have no overall electric charge (i.e. charge of atom is zero).
- Atomic Number = # of protons = # of electrons

Ions:
- Atoms that have gained or lost electrons are called ions.
- An ion is an electrically charged atom (or groups of atoms).
- Negatively-charged ion = anion
- Positively-charged ion = cation
- For Ions; # of electrons = protons - charge

Mass Number (A):
- Is the total number of protons and neutrons or atomic mass number.
- Atomic Number = the # of protons
- Atomic Mass = # of protons + # of neutrons
- Number of neutrons = Mass Number - Atomic Number
- Mass Number = # of protons + # of neutrons

Atomic Mass:
- The average mass of an element's isotopes.
- The atomic mass is very close (not exact!) to the mass number.
- # of neutrons = Mass Number - Atomic Number
                         Atomic Mass - Atomic Number
- The atomic mass is an average! The mass number is usually calculated by rounding the atomic mass to the nearest whole number.

Isotopes:
- Are atomic species having the same atomic number (protons) but different atomic masses/mass numbers (neutrons). Basically, same # of protons and electrons, but different # of neutrons.

Whew! Alot of information but pretty simple to comprehend, which is a very good thing :) So now let's give you some important visuals!










Hope those are helpful, and now here are some worksheets & extra information for you:
1) http://www.sciencejoywagon.com/chemzone/02atomic-structure/
2) http://misterguch.brinkster.net/propertyworksheets.html
3) http://docs.google.com/viewer?a=v&q=cache:Svl1HS3qzfsJ:misterguch.brinkster.net/001_021.doc+atomic+structure+worksheet&hl=en&gl=ca&pid=bl&srcid=ADGEESj_WYrtiEN2lX55CTrVQlm1hc7YmKY1mVbgw1DoKBPwfd7ZkvmnBtHXM9MonGdgMHr7rYPbP_zspbkgYZtxil2dk5ld9UqPcFm79Mukr5YOnQD-v3EXpsaki74QhGzie3QH_Cry&sig=AHIEtbTL6KdKPbx4-wFOQzdx-a1ZI3Et9g&pli=1
4) http://cmsweb1.loudoun.k12.va.us/52820831134912597/lib/52820831134912597/Atoms%20and%20Atomic%20Theory/Homework/ws.atomic.20structure.20set.pdf
5) http://www.allaboutcircuits.com/worksheets/atomic.html
6) http://staff.fcps.net/jswango/unit2/atomic_structure/Basic%20Atomic%20Structure%20Worksheet.pdf
7) http://chemistry.about.com/library/weekly/blatomquiz2.htm
8) http://www.softschools.com/quiz_time/chemistry/atomic_structure/theme81.html

Last but not least, here are some youtube videos:
1) http://www.youtube.com/watch?v=7ohfJ9ku8gc&feature=fvwrel
2) http://www.youtube.com/watch?v=WWxnZK_g5ug
3) http://www.youtube.com/watch?v=Z6Y4Ffod1hQ&feature=related

Thanks for reading & have a great long weekend! Wooooooooooo!!! :)