Unit Test Reflection

This unit test was difficult in that there were more questions than normal. There were 50 questions, and I felt rushed by the end. I did not have enough time to finish the last problem comfortably so I had to guess, and that problem was especially difficult anyway. This unit, admittedly, was a little easier than acids and bases, but it was still challenging in that there was a lot of memorization involved in this unit. I'm excited to start something new and I am going for the best for this test grade!

                           

                           

Periodic Trends

Ionization energy- qualitatively defined as the amount of energy required to remove the most loosely bound electron of an isolated gaseous atom to form a cation

Electron affinity- neutral atom's likelihood of gaining an electron

Atomic radius- total distance from an atom’s nucleus to the outermost orbital of electron

Periodic trends all follow a set pattern with a few exceptions. Electron affinity and ionization energy both go up and to the right, while atomic radius goes down and to the left.

Resources:
Electron Affinity
Electron Affinity Khan Academy
Ionization Energy
Atomic Radius

Wavelength and Energy Calculations

Wavelength  is the distance between two crests on a wave. A longer wavelength means the wave has less energy and lower frequency, and a shorter wavelength means the wave has a higher frequency and energy.

Waves with higher frequency and energy are shown on the left side of the diagram while lower frequency and energy waves are shown on the right side.

The energy of a photonis found using this equation. If you were to be looking for the energy in a  mole, you would just have to multiply your number that you get for energy of a photon by Avogadro's number 6.02 x 10^23.

Periodic Trends and Electron Configuration Study Links

These are great videos for describing periodicity and electron configurations. Bozeman Science always makes the best study videos and I always refer to them when I am preparing for tests.

Periodicity Bozeman Science

Electron Configuration

Here are some extra study links that really helped me:

Periodic table and electron shells Khan Academy

Hund's Law

Aufbau Principle

Pauli Exclusion Principle

Weekly Quiz

This quiz was a little easier than the others because the material was easier to comprehend. I freaked out the night before because I thought that I was not going to be ready for the quiz, but it turned out I was. There was much less math in this unit than previous ones which helped a lot with time, and many questions were about different electron configurations. I am excited for the rest of the unit because it is proving to be easier than the last units!

Flames

The Flame Test lab was so cool! We tested different solutions in a Bunsen burner to see what color light the flame emitted. Some of the colors were really cool; we had a bright emerald green and a fiery ruby red. This lab although cool, was one of the more dangerous labs in that a few students got minor burns, but it was in the name of SCIENCE.

The original color of the flame in the Bunsen burner

Pretty fiery red

Emerald green