Friday, September 27, 2013

5.1

~Ionic Compounds~

In 5.1 we learned about ionic compounds. We described how ions are formed and in which arrangements they are stable. We learned how to predict the number of electrons lost or gained and the oxidation number. We learned what a cation and anion is. We defined ionic radius and compared cation and anion radius to a neutral atom. We wrote names for binary ionic compounds and also how to write charges with polyatomic ions.

Need to Know
- What an ion is and how it becomes stable
- Which elements are cations and anions
- How ionic radius changes
- How to write binary ionic compounds
- Polyatomic ions

5.1 was quite challenging in some aspects. The hardest part was understanding transition metals when wrote as an ionic compound.

We need to know this information so we can move forward into molecules and covalent bonds. 

Tuesday, September 24, 2013

4.2

~Periodic Trends~

In 4.2 we learned about valence electrons. We also learned how to define atomic radius and know how the radius is largest at the bottom-left and smallest at the top-right. We learned about ionization energy and electronegativity and how protons and energy levels affect the reactivity of elements. 

Need to Know
- How to determine the number of valence electrons
- How to define the atomic radius
- What ionization energy and electronegativity is and the trends they follow
- Comparing the character and reactivity of different elements and justify these trends by using ionization energy and electronegativity

4.2 was slightly difficult when it came to first understanding electronegativity and ionization energy.

We need to know this information so we can know how many valence electrons are in an element and why they react the way they do. We can also know the atomic radius of an element based on its location on the periodic table.

Friday, September 20, 2013

3.3

~The Electron Cloud Model~

In 3.3 we learned about the electron cloud model. We learned about orbitals and sub-shlls as well as how to write electron configurations, including noble gas abbreviations. I learned how to identify an element based on its electron configuration as well.

Need to Know
- What the electron cloud model is
- How to write electron configurations
- How to write noble gas abbreviations
- How to identify s, p, d, and f blocks on Periodic Table
- How to identify elements based on their electron configuration

I didn't find section 3.3 to be a very difficult section.

We need to know all of the information above so we can comprehend where electrons may be as well as using electron configuration/noble gas notation. We will need this information for our future studies.

Tuesday, September 17, 2013

3.2

~The Bohr Model~

In 3.2 I learned about the wave/particle duality of electrons and the Bohr Model. I learned the concepts of how the electron is in fixed energy ranges and how it cannot gain or lose energy. I also came to understand the relationship between wavelength, frequency, and energy.

Need to Know
- The wave/particle duality of electrons
- The Bohr Model and how it is properly drawn out
- The concepts of the electron
- How to discover the energy of a photon based on the wavelength
The hardest part of this unit would have been first comprehending how an electron is dual-natured.

We need to know this information so we can understand an electron and how it moves in an atom.

Thursday, September 12, 2013

7.1

~Nuclear Energy~

In 7.1 I learned about alpha and beta nuclear particles and gamma radiation including symbols, composition, and relative penetrability, half-life, as well as vocabulary words and nuclear fission/fusion.

Need to Know
-Alpha and beta decay equations as well as gamma radiation (while also remembering symbols, composition, and relative penetrability)
-How to calculate the age of a substance using isotop composition of a sample while given the half-life
-Sorting Vocabulary words into three categories: 
1)Radioactive Decay 2)Fission 3)Fusion
-Using equations to balance and solve for unknowns

The hardest part would be sorting the vocabulary words into three categories!

We need to know this information so we know how alpha and beta particles work, how gamma radiation works, and how nuclear fission/fusion works so we can apply this to our future studies.

Friday, September 6, 2013

3.1 & 4.1

~Atomic Structure~

In 3.1 I learned about the atomic structure of an atom. I learned that an atom is composed of protons, neutrons, electrons, and mostly empty space. 

Need To Know
Atomic Number (represented by the letter Z) tells us the number of Protons and Electrons in an atom.
Atomic Mass (represented by the letter A) tells us the number of Protons and Neutrons in an atom.

Although it was not very difficult the most challenging part of this lesson would be finding the "amu" for an atom based on the relative abundance of an elements isotopes. 

We need to know this information so we can know what element we have based on protons or how to find the amount of neutrons and electrons based on an isotopes mass and atomic number.

Fun Part - MnMium Lab!

~The Periodic Table~

In 4.1 I learned about the periodic table and how it is organized.



Need To Know
The periodic table is categorized in different ways. One method is based on the form of the element (Alkali Metals, Alkaline Earth Metals, Inner Transition Metals, Transition Metals, Post-Transition Metals, Metalloids, Nonmetals, Noble Gases, and Halogens.) A different was is based on the rows (also known as periods) and the columns (also known as the families.)

I found this lesson very easy and understandable. We do need to know this information though so we can categorize elements in a multitude of manners.

Fun Part - Coloring the periodic table!