Embedded Files
Unit Learning Goals
Unit Learning Goals
Identify methods of indirect measurement
Compare current and former atomic models
Analyze various forms of an atom based on sub-atomic particles
Analyze atom form changes based on radiation
Utilize a Periodic Table to determine atomic facts
Compare atoms based on atomic trends
"Draw-A-Picture" Ability Tests in Science
"Draw-A-Picture" Ability Tests in Science
A well-known test in the psychological community is the "Draw-A-Person" Test. This test allows psychologists to estimate various psychological metrics based on the way a person draws a specific picture.
We use a similar test in science to determine various misconceptions and preconceived ideas that students might have about a science concept.
Indirect Measurement
Indirect Measurement
Many discoveries in science come about through the process of "indirect measurement". This type of measurement involves describing and measuring something without the use of the typical senses. Indirect measurement methods include:
"Thinking Outside The Box"
Shooting Something With A Particle (Destructive Testing)
Exposure to Energy (light, heat, radiation, electricity, etc.)
Atomic Models
Atomic Models
Throughout history, indirect measurement has been used to describe various views of the structure of an atom. Our current view is based on a model described by Erwin Schrodinger in 1926. All other models we investigate will be compared to this model. The Schrodinger model is complex - in order to simplify the view, it is often drawn as being similar to the Bohr Planetary model from 1913.
Atomic Models: Sep 12, 2021 2:31 PM.webmAtomic Model Slideshow Narrated Video
The Current Quantum Model of the Atom (Erwin Schrodinger, 1926)
The Current Quantum Model of the Atom (Erwin Schrodinger, 1926)
This is the model of the atom we use in class. All other models are compared to this model.
Base-Ion-Isotope Forms of Atoms
Base-Ion-Isotope Forms of Atoms
There are three basic sub-atomic particles in an atom - protons, neutrons, and electrons. Each of these particles was discovered using indirect measurement methods. Changing these particles in an atom leads to the following results:
Protons - Since the proton is the IDENTITY element for an atom, changing protons changes the entire identity of the atom.
Electrons - This particle determines the ELECTRICAL CHARGE on the atom. Changing electrons results in positively charged or negatively charged IONS.
Neutrons - Along with protons, neutrons contribute to the MASS of the atom. Since they have no charge, neutrons do not affect the overall atomic charge. Changing neutrons results in a lighter or heavier ISOTOPE.
Base-Ion-Iso Atoms: Sep 12, 2021 3:09 PM.webmThis is a video narration of the slideshow to the left.
Base-Ion-Iso Reference Page.pdfBase-Ion-Iso Reference Page Answers.pdfAluminum Foil Thickness Full Lab
The Aluminum Foil Thickness lab allows students to investigate differences in consumer products at the atomic level. The lab involves determining the thickness of brand-name and generic aluminum foil using atoms as the measurement unit.
Radiation Math.pdfRadiation MathA1.pdf
Radiation PPT.pptx
The Iowa State Connection
The Iowa State Connection
The Ames Project was a research and development project that was part of the larger Manhattan Project to build the first atomic bombs during World War II. It was founded by Frank Spedding from Iowa State College in Ames, Iowa as an offshoot of the Metallurgical Laboratory at the University of Chicago devoted to chemistry and metallurgy, but became a separate project in its own right. The Ames Project developed the Ames Process, a method for preparing pure uranium metal that the Manhattan Project needed for its atomic bombs and nuclear reactors. Between 1942 and 1945, it produced over 1,000 short tons (910 t) of uranium metal. It also developed methods of preparing and casting thorium, cerium and beryllium. In October 1945 Iowa State College received the Army-Navy "E" Award for Excellence in Production, an award usually only given to industrial organizations. In 1947 it became the Ames Laboratory, a national laboratory under the Atomic Energy Commission.
Radiation in Iowa
Radiation in Iowa
The primary source of radiation in Iowa is radon gas. Radon is a colorless, odorless gas that results from the radioactive decay of uranium in the soil. This decay process is especially active in areas with large amounts of limestone.
Radon
Radon
Skeptical Questions In Science
Skeptical Questions In Science
The skeptical question topic for this unit is nuclear power. Skeptical questions are thoughtful "Why-based" questions which address biases in scientific material. This type of question is not seeking scientific facts.
The article associated with this unit is listed below:
This is the point in the unit where the first 80% Quiz occurs. This quiz covers indirect measurement, atomic models, base-ion-isotope forms, and radiation.
This is the point in the unit where the first 80% Quiz occurs. This quiz covers indirect measurement, atomic models, base-ion-isotope forms, and radiation.
Periodic Table
Periodic Table
The Periodic Table is our organizational system in Chemistry for atoms. In class, we typically use a color-coded Los Alamos Periodic Table or an online interactive Periodic Table from "ptable.com". This table and a how-to-use video are shown below.
Los Alamos PT.pdfThe Los Alamos Paper Table
"ptable.com" Interactive Online Periodic Table
Online Periodic Table - Orientation to "ptable.com".webmPeriodic Trends
Periodic Trends
Within the Periodic Table, there are facts about individual atoms, but there are also "trends" that appear throughout the entire table. These trends might be associated with horizontal rows or vertical groups of atoms.
The document below is our reference sheet for these periodic trends.
PT Trends Reference Page 1.pdfPT Trends Reference Page 2.pdf"Learning To Learn (L2L)" and Retrieval Assignment List (REQUIRED BEFORE UNIT GRADED TEST) and Calibration Test
"Learning To Learn (L2L)" and Retrieval Assignment List (REQUIRED BEFORE UNIT GRADED TEST) and Calibration Test
Learning to Learn and Retrieval List
Intro Lab and Reflection (Indirect Measurement)
Practice (Atom Models, Atom Forms, Radiation Math, Periodic Table Facts, Periodic Table Trends)
80% Quiz #1
80% Quiz #2
Student Study Reflection on the back of each quiz
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