Doolan's Chemistry Class

Pre-AP Atomic Structure

All matter is composed of atoms!
​Understanding the composition and location of the subatomic particles helps us predict behavior of the elements.

Assigned Lecture

3.1 - Atomic Structure and Ions
Lecture Summary: The location and arrangement of subatomic particles will determine many properties of elements. Protons determine element identities, neutrons can change an elements mass and proton-electron ratios determine charges of elements or ions. We can use the periodic table to quickly determine information about an elements number of protons and  the location of all of it's electrons.
Concept Map: Atomic Structure and Ions
Doolan's Notes: ​Atomic Structure and Ions
Key Q's and Vocab: ​Atomic Structure and Ions
Supporting Lectures
Exploratory Links

Assigned Lecture

3.2 - Isotopes and Average Atomic Mass
Lecture Summary: Isotopes are atoms with the same number of protons but a different number of neutrons and can be represented using either hyphen notation or nuclear notation. Isotopes were discovered using mass spectrometry and the discovery led to the revision of the Dalton's early atomic model. The relative abundance of isotopes are used to calculate the average atomic mass of elements.
Supporting Lectures
Exploratory Links
Concept Map: Isotopes and Atomic Mass
Doolan's Notes: ​Isotopes and Atomic Mass
Key Q's and Vocab: ​Isotopes and Atomic Mass

Assigned Lecture

3.3 - Basics of the Periodic Table
Lecture Summary: The periodic table is arranged based on atomic structure. The arrangement allows us to predict valence electrons, reactivity & chemical properties, and valence electron location/region.
Supporting Lectures
Exploratory Links
Concept Map: Basics of the Periodic Table
Doolan's Notes: ​Basics of the Periodic Table
Key Q's and Vocab: ​Basics of the Periodic Table

Assigned Lecture

3.4 - Intro to Electron Configurations
Lecture Summary: Electron configurations are used to show the location of all of the electrons within an atom. Since the placement of electrons within energy shells follow regular patterns the location of an element on the periodic table is directly related to the electronic structure of the atom. We will use element position on the periodic table to write electron configurations.
Supporting Lectures
Electron configurations
Orbital Notation
Exploratory Links
Concept Map: Intro to Electron Configurations
Doolan's Notes:​ Intro to Electron Configurations
Key Q's and Vocab: ​ Intro to Electron Configurations

Assigned Lecture

3.5 - Coulomb's Law
Lecture Summary: The behavior of elements is directly related to the Coulombic attraction between the nucleus and the electrons. Since electron placement is orderly and predictable we can use Coulombs Law to predict and explain differences in behavior of elements. We will also use Coulomb's Law to explain trends in behavior of the elements.
Supporting Lectures
Exploratory Links
Concept Map: Coulomb's Law
Doolan's Notes: ​Coulomb's Law
Key Q's and Vocab: ​Coulomb's Law

Assigned Lecture

3.6 - Periodic Trend: Ionization Energy
Lecture Summary: First ionization energy is the energy needed to remove the least tightly help electron from a gaseous state atom. The amount of ionization energy is directly proportional to the coulombic attraction the valence electron experiences to the nucleus. We can use the atomic structure of atoms to justify and predict differences in ionization energy based on Coulomb's Law.
Concept Map: Periodic Trend - Ionization Energy
Doolan's Notes: ​Periodic Trend - Ionization Energy
Key Q's and Vocab: ​Periodic Trend - Ionization Energy
Supporting Lectures
Exploratory Links

Assigned Lecture

3.7 - Periodic Trend: Atomic Radius
Lecture Summary: Atomic radius is the distance from the nucleus to the outermost electron. Atomic structure can be used to justify and predict difference in atomic radius within a group. Coulomb's Law combined with atomic structure can be used to justify and predict differences in atomic radius for elements within a period.
Concept Map: Periodic Trend - Atomic Radius
Doolan's Notes: ​Periodic Trend - Atomic Radius
Key Q's and Vocab: ​Periodic Trend - Atomic Radius
Supporting Lectures
Exploratory Links

Assigned Lecture

3.8 - Electromagnetic (EM) Spectrum
Lecture Summary: The electromagnetic spectrum related the energy of photons to wavelength and frequency of photons. A big part of this course will focus on the emission of photons from electron transitions within atoms.
Supporting Lectures
Exploratory Links
Concept Map: EM Spectrum
Doolan's Notes: ​EM Spectrum
Key Q's and Vocab: ​EM Spectrum

Assigned Lecture

3.9 - Electromagnetic Spectrum Calculations
Lecture Summary: There are three formulas used to quantify the energy of a photon or to relate the frequency to the wavelength of a photon. 
Supporting Lectures
Exploratory Links
Concept Map: EM Spectrum Calculations
Doolan's Notes: ​EM Spectrum Calculations
Key Q's and Vocab: ​EM Spectrum Calculations

Online  Test Retake - Unit 4