Periodic Table Activity

On Tuesday we were assigned a project to determine the placements of elements on a periodic table based upon the three sets of data that we were given, density, ionization energy, and a list of a reaction of each of the elements with a metal and a non metal, respectively. We did a similar project on Monday but it only contained one set of data with clues to a specific element. The one we got on Tuesday was a bit harder, but working with my lab partner, we were able to figure most of it out and I finished the last of it on my own.

The Unit Test

Helpful studying links:


Periodic Trends Practice

Practice Calculations

Quantum Number Practice

Electron Configuration Practice

Periodic Trends video

Electron Orbitals

QUIZ!

Last Friday we took our weekly quiz and I spent about 3.5 hours Thursday night studying for it. I printed off all the practice tests and worksheets and luckily all my hard work payed off because I got a 91% on it! That's like the highest grade I've gotten on a test or quiz since first quarter. I'm just hoping I can also get a good grade on the test tomorrow.  

Periodic Trends

This week we learned about periodic trends. There are four trends found on the periodic table, trends in atomic size, trends in ionization energy, trends in electron affinity, and trends in electronegativity.
For atomic size the trend is that as you move down a group the atoms tend to get larger. It is also noticed that as you move across the periodic table from left to right, the atomic size decreases. The trend for ionization energy is that it increases as you move up and to the right. For electron affinity and electronegativity the trend is also that it increases as you move up and to the right.
Therefore the element Cs has the largest atom, He has one of the highest ionization energies, and the most electronegative element is F because Noble gases do not normally combine with other elements so electronegativity is not a valid term for these elements.

Electronic Structure Week 1 Post #1

On Friday we learned about the four levels of organization which describe the location of an electron in any particular atom. The first level is the Principal Energy Level, the second is Sublevel, the third is Orbitals, and the fourth is Spin. We also learned about three rules for placing electrons: the Aufbau Principle, the Pauli Exclusion Principle, and Hund's Rule. Then we drew energy level diagrams and orbital diagrams. We also color coded our periodic table with specific colors for each of the four types of orbitals.

Flame Test Lab

Last week we got to discover the color of certain metal compounds by taking a wooden splint which was dipped in that compound and then hold it in the flame of a Bunsen burner to see what color the compound burned. For some of the compounds we had to use a cobalt glass square in order to see the color of the flame of the burning compound. Overall the lab was really fun and interesting to see what color some of the compounds burned.