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Interactive
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PhET

Isotopes and Atomic Mass

For Students 6th - Higher Ed Standards
Some isotopes are unstable, or radioactive, meaning they will decay over time and turn into another isotope or stable element. In the interactive simulation, participants manipulate elements to create isotopes and gather information....
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Lesson Plan
Curated OER

Atomic Musical Chairs

For Teachers 5th - 8th
An engaging activity enlightens young chemists in this lesson on atomic structure. They play musical chairs through a series of concentric circles that represent electon orbitals. A laundry basket in the middle holds the protons and...
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Worksheet
Curated OER

The Atoms Family ~ Atomic Math Challenge

For Students 5th - 8th
Bold boxes present parts of the periodic table, with some of the contents conveniently missing. Beginning chemists fill in the blanks, which may include the atomic number, atomic mass, atomic symbol, or element name. Beneath each box...
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Assessment
Curated OER

2009 U. S. National Chemistry Olympiad - Local Section Exam

For Students 9th - 12th
Here is a copy of a past national challenge exam that you can use in your general chemistry course as a unit or semester review. Sixty multiple-choice questions query learners on properties of matter, stoichiometry, reactions, and...
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Lesson Plan
American Institute of Physics

African Americans and the Manhattan Project

For Teachers 9th - 12th Standards
A lesson plan about the Manhattan Project will explode young physicists' understanding of the racial attitudes in the United States during and after World war II. Groups select an African American scientist or technician that worked on...
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Lab Resource
Pingry School

The Periodic Law

For Students 9th - 12th Standards
Time to put the knowledge to the test! Young scholars take what they know about the periodic table and build their own from scratch. Using clues from 26 different elements, they place elements in a blank periodic table. The clues include...
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Lab Resource
Pingry School

Isotopes and Atomic Mass – Determination of the Average Atomic Mass of Pastium

For Students 9th - 12th
Sometimes modeling is the best approach to working with microscopic particles. A lab investigation models a fictional element using pasta. The setup uses three different pasta types to represent three different isotopes. Learners...
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Lesson Plan
Kenan Fellows

Isotopic Pennies

For Teachers 9th - 12th Standards
Many people confuse atomic mass and atomic numbers. The sixth of seven lessons in a unit requires scholars to find the weight of different groups of pennies. Then, they must solve how many of each type of penny exists in a closed system...
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Lesson Plan
Kenan Fellows

Determining the Atomic Mass of Elements in a Compound Using Matrices

For Teachers 9th - 12th Standards
Scholars apply concepts learned in both Algebra II and Chemistry to answer the questions on the provided worksheet. The activity allows for extra practice in both classes and helps connect concepts usually taught in isolation. The...
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Lesson Plan
Cornell University

Isotope Rummy

For Teachers 9th - 12th Standards
Thanks to this game, teaching isotopes will never be the same. Physical science scholars work their way toward understanding isotopes in an entertaining game. Pupils play rummy in groups while practicing good sportsmanship and creating...
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Interactive
Concord Consortium

Exploring Electron Properties

For Students 9th - 12th Standards
Bring a historic chemistry experiment to life in your classroom! Introduce pupils to Thompson's ground-breaking discovery of the electron through a cathode ray simulation. The resource allows users to study the behavior of both electrons...
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Handout
National Institute of Open Schooling

Mole Concept

For Students 7th - 12th Standards
Learners explore atomic measurement in the first activity in a series of 36. Through readings, activities, and questions, classes review standard SI units, learn about Avogadro's constant, and use it to help them calculate moles. They...
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PPT
Science Geek

Atomic Structure

For Teachers 9th - 12th
The International Union of Pure and Applied Chemistry (IUPAC) was formed in 1919 and was crucial for allowing scientists to discuss findings during the Cold War. A presentation offers an introduction to atomic structure including the...
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Worksheet
Mr. Jones's Science Class

Parts of the Atom

For Students 7th - 11th
Up and atom! After labeling the parts of an atom, young chemists answer 16 diagram-based questions that deal with protons, neutrons, electrons, and atomic number.
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Lesson Plan
Virginia Department of Education

Average Atomic Masses

For Teachers 9th - 12th Standards
Facilitate learning by using small objects to teach the principles of atomic mass in your science class. Pupils determine the average mass of varying beans as they perform a series of competitive experiments. They gather data and...
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Lesson Plan
Virginia Department of Education

Isotopes

For Teachers 9th - 12th Standards
Lead your class through the amazing world of isotopes as they investigate the various properties they contain and further understand their respective location on the periodic table. They explore half-lives and radioactivity as each...
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Activity
It's About Time

Atoms and Their Masses

For Teachers 7th - 12th Standards
Are atoms too small to be isolated? Answer this question and more as you provide young chemists with the tools to conduct a hands-on activity demonstrating atomic mass. Pupils explore the mass of copper and aluminum, compare Dalton's...
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Lesson Plan
Virginia Department of Education

The Modern Model of Atomic Structure

For Teachers 9th - 12th Standards
The difference between atomic mass and atomic number can be confusing for some young chemists. Help your class better understand the concepts by allowing them to sketch an atom on paper and then discuss their experience. Upon completion...
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Lesson Plan
University of Georgia

Bag O' Isotopes

For Teachers 9th - 12th Standards
Accommodate your chemistry class with an experiment that is both entertaining and educational. Through the activity, blossoming chemists perform calculations on various isotopes, as represented by beans and legumes, to obtain the average...
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Worksheet
Shelby County Schools

Atomic Structure Worksheet

For Students 7th - 12th Standards
Teaching young scientists about atoms is no small task, but this series of worksheets will make it a little easier. From creating and labeling Bohr models, to identifying information provided in the periodic table of elements, this...
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Worksheet
T. Trimpe

Atomic Basics

For Students 7th - 12th Standards
Get down to basics with these worksheets on the structure of atoms. Challenging young chemists to identify information from the periodic table and create Bohr diagrams and Lewis dot structures for different elements, this resource would...
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PPT
Curated OER

The Building Blocks

For Teachers 7th - 12th
This PowerPoint is a comprehensive review of all the facts related to an atom's basic structure and function. What makes this unique is that it is geared toward an audience of junior geologists. After introducing the periodic table of...
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Worksheet
Curated OER

Unit 2 ~ Atomic Structure

For Students 9th - 12th
As an atomic structure reference and review tool, this handout fits the bill. The first page provides definitions and tables of orbitals, electrons, and energy levels. The second page is an opportunity to practice determining numbers of...
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Worksheet
Curated OER

Chapter 2 and 3 Practice Worksheet - Formulas and Compounds

For Students 9th - 12th
In this formulas and equations worksheet, chemistry apprentices write the chemical formulas given the names. They calculate percent composition, balance equations, and calculate the mass of a substance present in a fertilizer. This is a...