Handout
PBS

Pbs: People & Discoveries Niels Bohr

For Students 9th - 10th
A wonderful PBS biography of a great man. This contains many personal touches, yet does a fine job of describing Bohr's scientific work. But it's best at Bohr the man. Nice quotes, one in the middle, one at the end.
eBook
CK-12 Foundation

Ck 12: Flex Book Textbooks: Chemistry Second Edition

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] A complete, web-based, multi-media textbook covering a wide variety of Chemistry concepts.
Handout
Thomas Jefferson National Accelerator Facility

Jefferson Lab: It's Elemental Periodic Table of Elements

For Students 9th - 10th
This page displays the Periodic Table of Elements and allows you to click each individual element for a page that displays in-depth information about that particular element. There are also links to many different games and learning...
Handout
National High Magnetic Field Laboratory

Magnet Academy: Enrico Fermi

For Students 9th - 10th
Enrico Fermi was a titan of twentieth-century physics. He outlined the statistical laws that govern the behavior of particles that abide by the Pauli exclusion principle and developed a theoretical model of the atom in his mid-twenties....
Unit Plan
Concord Consortium

Concord Consortium: What Are Nature's Building Blocks?

For Students 9th - 10th
Activity 4 What are the electrons? This question is answered in the context of Niels Bohr's model and the probability model of atomic structure.
Unit Plan
BBC

Bbc: Gcse Bitesize: The Periodic Table

For Students 9th - 10th
This lesson focuses on the periodic table and the configurations. In the modern periodic table, elements are in order of atomic number in periods and groups. Electronic configurations model how electrons are arranged in atoms. A link to...
Unit Plan
Other

Crocodile Clips: Absorb Chemistry: History of the Atom

For Students 9th - 10th
A tutorial that presents models of the atom proposed by John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr. Each is supported by an animated illustration. Includes comprehension questions and a quiz at the end.
Unit Plan
Concord Consortium

Concord Consortium: What Are Nature's Building Blocks?

For Students 9th - 10th
Activity 3 of this module investigates: How do we know what's inside an atom? From Ernest Rutherford's Gold Foil Experiment to his investigation of the Plum Pudding model, students become aware of the Nuclear Model of an Atom. Also in...
Lesson Plan
Science Education Resource Center at Carleton College

Serc: Valence Electrons and Trends in the Periodic Table

For Teachers 9th - 10th
This instructor led activity will produce a partially filled periodic table that contains electron-dot models for the first twenty elements in the appropriate boxes. It will be used as a visual tool for students to connect concepts such...
Article
Famous Scientists

Famous Scientists: Aage Bohr

For Students 9th - 10th
Learn about the life of Aage Niels Bohr, and see how his work was pivotal in the development of the theory of the structure of the atomic nucleus.
Handout
Other

Erik's Chemistry Page: Electronic Structure of Atoms

For Students 9th - 10th
A description of quantum theory, the Bohr model of the atom, the quantum mechanical atom, the Scrodinger equation, and quantum numbers.
Interactive
Davidson College

Davidson College: Effective Nuclear Charge

For Students 9th - 10th
Explains what Slater rules are and presents exercises for exploring how they are used to estimate the effective nuclear charge and how well they work compared to the Bohr model expression for orbital sizes. Requires Java.
Graphic
Other

Beautiful Chemistry: Beautiful Structures: Quasicrystals

For Students 9th - 10th
An interactive display of quasicrystals allows students to study the inner components and molecular make-up of these structures. Since the discovery of quasicrystals, a lot of efforts have been put on finding the locations of atoms...
Interactive
PBS

Nova: Atom Builder

For Students 9th - 10th
Find out if you know enough about atoms to build them. The goal of the activity is to build an atom of a particular element by dragging the correct numbers of neutrons, protons and electrons into the atom.
Activity
TeachEngineering

Teach Engineering: Gumdrop Atoms

For Teachers 3rd - 8th
In this activity, students make a model of a lithium atom using gumdrops and toothpicks. Using this model, they investigate the makeup of an atom, including its relative size. Students also practice adding and subtracting electrons from...
Unit Plan
Concord Consortium

Concord Consortium: Where Does All the Energy in an Explosion Come From?

For Students 9th - 10th
In this module Activity 2 investigates What happens to atoms during a chemical reaction? In this activity students explore chemical reactions and develop a model to explain observations of chemical reactions.
Unit Plan
Concord Consortium

Concord Consortium: Where Does All the Energy in an Explosion Come From?

For Students 9th - 10th
Students construct a model of chemical reactions involving energy and electrostatic interactions and compare reactions and changes in energy through the following activities. Activity 1 What energy changes occur during an explosion?...
Unit Plan
Concord Consortium

Concord Consortium: How Can a Small Spark Start a Huge Explosion?

For Students 9th - 10th
In this module Activity 2 investigates What holds the atoms of a molecule together?The activity will explore what holds atoms together and why they from a molecule. Bonus reading includes Same Molecules but Different Representations.
Website
Environmental Chemistry

Periodic Table of Elements: Gallium

For Students 9th - 10th
A very detailed look at the element Gallium, a member of the Boron Group.
Website
Environmental Chemistry

Periodic Table of Elements: Indium

For Students 9th - 10th
A very detailed look at the element Indium, a member of the Boron Group.
Website
Environmental Chemistry

Periodic Table of Elements: Thallium

For Students 9th - 10th
A very detailed look at the element Thallium, a member of the Boron Group.
Handout
PBS

Pbs: Planck Discovers the Quantum Nature of Energy

For Students 9th - 10th
PBS offers a short summary of the discovery of the quantum nature of the atom by Max Planck. Easy to follow.
Unknown Type
Other

A Short History of the Atom

For Students 9th - 10th
A classroom wiki where students present profiles of scientists who developed models of the atom or who contributed to the understanding of atomic theory. Covers Democritus, Aristotle, John Dalton, J.J. Thomson, Ernest Rutherford, Marie...
Graphic
Curated OER

[Bohr Model of Samarium]

For Students 9th - 10th
A site containing a good deal of elemental information. Information on each element includes atomic number, atomic mass, melting point, boiling point, density, isotopes and more.

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