Curated OER
Properties of Matter
Ninth graders explore the molecular structure of matter and how it can affect the physical characteristics of a specific material. They demonstrate that isotopes of an element have different masses. Students demonstrate that the rates of...
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Protons, Neutrons, and Electrons
Using the periodic table of elements, young chemists fill in a chart of isotopes to show the atomic number, mass, charge, number of protons, number of neutrons, and number of electrons. The chart is followed by 11 questions that...
CK-12 Foundation
Atoms to Molecules: Constructing Helium
Protons and neutrons and electrons, oh my! Physical science scholars get hands-on with interactive atomic modeling. Starting with a simple helium atom, participants create and name ions, then build isotopes. Questions throughout the...
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Atoms and Chemical Bonding
An online resource, this worksheet has your chemistry learners complete four data tables with information about atoms and chemical bonds. The first table addresses atomic number and mass, as well as numbers of protons, neutrons, and...
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Nuclear Reactions Answers to Questions
Written to accompany another slide show available through our site, the information here gives the history and trivia connected to nuclear decay research. This slide show concentrates on the definitions and theory of nuclear fission and...
Carolina Biological Supply
Building Atoms, Ions, and Isotopes HD
Atomic theory, a periodic table, and a place to practice making atom models without having to draw every proton, neutron, electron, and orbital! This resource is colorful, visually pleasing, and easy to use.
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History's Thermometers
Ancient coral beds give scientists clues to past ocean temperatures in much the same way that tree rings indicate historical weather conditions. High school scientists examine coral oxygen isotope ratios and plot the data as a function...
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Atomic Musical Chairs
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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Earth's Age: The Dating Game
Students conduct a simulation to determine radioactive decay and half-life. Using pennies, dice or sugar cubes as isotopes placed in shoe boxes simulating rocks, they hold five trials representing 1000 years each to find the theoretical...
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Industrialization of the American Landscape
Students explore the Chernobyl incident and the resulting environmental health impacts. They explore three different isotopes that were released into the atmosphere. Through inquiry, students determine the difference between types of...
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Radiochemistry
In this radiochemistry instructional activity, students read about how scientists learn more about elements using radioactive isotopes. Students answer three critical thinking questions about the reading and radiochemistry.
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Nuclear Decay
In this nuclear decay worksheet, students read about alpha and beta decay and the isotopes formed by the reactions. Students solve nine problems including writing the equations for the decay of radioactive isotopes, identifying the...
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Charge and Mass Worksheet #1
For this charge and mass worksheet, students complete a table by indicating the atomic number, the number of protons, the number of neutrons, the number of electrons and the mass number in given elements and isotopes. They compare...
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What is the Relationship Between Radioactivity and Radon?
In this radon and radioactivity worksheet, students analyze the data of the isotopes of elements that occur in the decay series of uranium-238. Students answer 6 questions about the isotopes, their half-lives, their potential threat and...
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Atoms, Molecules, and Ions
In this molecules worksheet, students review the parts of an atom and use element mass to determine isotopes. Students give the group, period, and classification for the given elements. This worksheet has 6 short answer questions and 17...
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Radioactive Dating
In this radioactive dating worksheet, students use their reference guide in their text book to find the half-lives of 4 isotopes. They use a decay chart to help determine the half-lives and age of given bones and samples of radioactive...
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What Do Atoms Look Like?
In this atomic structure worksheet, high schoolers answer eleven short answer questions about the structure of atoms including the number of protons, neutrons and electrons. Students indicate the differences in isotopes of atoms and what...
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Final Worksheet
Students will review a semesters worth of material on this final chemistry review. Information ranges from naming isotopes to pH and molarity.
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Earth Structure and Materials
Students explain what is meant by term nuclear radiation, describe in detail electromagnetic spectrum, differentiate between ionizing and non-ionizing radiation, understand half-life of isotopes, differentiate between processes of...
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Atomic Structure and Periodic Table Review
In this atomic structure and periodic table worksheet, students complete a table with isotopes, their atomic masses, the number of protons, neutrons and electrons and mass number. They also find the average atomic mass of atoms and...
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Radioactivity-What is the Nucleus Like?
In this radioactivity worksheet, students answer 40 questions about half life, isotopes, radioactive decay, the uses of radioactivity, nuclear equations and the scientists associated with radioactivity.
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Polar Energy
Students define and read an article on polar energy. For this polar energy lesson, students answer questions about the article. Students participate in activities related to isotopes, half-life and radiocarbon. Students make global...
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Atoms and the Periodic Table
Familiarize your new chemists with the periodic table of elements by contemplating this collection of slides. Element groups are identified, atoms are defined, and nuclide notation is explained. Isotopes are also mentioned. The topics...
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Teaching Atomic Structure Using Cooperative Learning
Individuals in a group of four each take on a different role: atomic number expert, mass number expert, isotope expert, and nuclear atom expert. They teach each other about their area of expertise. As an assessment, a short quiz is...