Curated OER
Radioactive Decay
High schoolers generate a radioactive decay table for an imaginary element, use their data to plot a decay graph, develop the concept of half-life, and use the graph to "age" several samples.
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Radioactivity
In this radioactivity worksheet, students write the mass number and atomic number for the missing element in the reactions. Students identify the isotope that is more stable and determine the half-life of the isotope. This worksheet has...
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Chemistry: Changing Materials
Students examine physical change with different temperature and solvents. In this elements and compounds lesson, students conduct experiments to discover what happens to the mass of a substance when is undergoes a physical change.
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High School Chemistry Questions
In this chemistry worksheet, students determine the number of water molecules is a given volume of water. Students determine the empirical formula for given compounds from the percentage mass of elements. This worksheet has 20 problems...
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Chemistry 1 Practice Exam
In this chemistry practice test worksheet, students answer 30 multiple choice questions regarding chemical formulas and chemical names for compounds.
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Periodic Table Basics 2
For this periodic table worksheet, students create cards for a annotated periodic table then use it to answer 16 short answer and fill in the blank questions.
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Crystals: What Are They and What Holds Them Together
Students are introduced to the characteristics of crystals and what keeps them together. Using the Periodic Table, they examine the various elements and develop a model of an atom. In groups, they place sugar and salt in petri dishes...
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Forces And Energy
Middle schoolers investigate the atom and how it is formed. They conduct research using a variety of resources and then construct a model of the atom. Then students have class discussion. The lesson includes background information for...
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Using several learning modalities to teach about the Periodic Table.
Pupils identify how to relate the position of an element in the periodic table to its atomic number and atomic mass. They identify how to use the periodic table to identify metals, semimetals, nonmetals, and halogens, and also, alkaline...
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Periodic Table
Students relate to the idea of periodicity & give example of other periodic events and identify and use the periodic table as a useful resource. They also identify the relationship of elements to certain groups & periods &...
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The Nucleus
In this atoms worksheet, learners review terms associated with atoms which includes isotopes, transmutation, and radioactive decay. This worksheet has 11 short answer questions.
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Code Makers - Electron Configuration, Aufbau Principle
Students write the electron configuration of elements using the Aufbau principle. In this chemistry lesson, students build their own key that demonstrates the principle.
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Earth and Matter
In this matter worksheet, high schoolers review the Earth's layers, write balanced equations, and compare the properties of different elements. This worksheet has 29 fill in the blank questions.
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Date a Rock!
Students figure the number of half-lives since the sample solidified, and therefore the "age" of the sample rocks.
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Using Radioactive Decay To Determine Age
Students explore the process of carbon dating fossils to determine their age. They simulate radioactive decay using pennies in a shoe box. Heads represents a decayed atom each time they shake the box. They use the data to calculate the...
Biology Junction
Macromolecules
In chemistry, organic means something contains a carbon base. A helpful presentation starts by defining macromolecules as large organic carbon molecules. Scholars answer questions about each topic on the associated worksheet. It covers...
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Molecule Models: Model to Formula and Model to Formula
In this science molecule models worksheet, student convert 8 molecule models to chemical formulas and 8 chemical formulas to molecule models.
National Wildlife Federation
It's A Bird...It's A Plane...It's...CARBON!
An interesting lesson takes pupils on a trip through the carbon cycle. A reading passage allows scholars to take notes and make choices about what happens to the carbon on its journey. This third lesson in a series of 21 discusses...
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Chemistry Slide Collection
A huge slide show provides a review of almost every topic there is to cover in basic chemistry! Your young scientists will be interested to see each illustration and example given. The appearance of the 120 slides varies greatly, most...
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The Mathematics of Chemical Formulas
Wow! This is one of the most exhaustive presentations on finding chemical formulas that you will come across! Beginning with the basics, and leaving junior chemists with procedures and concrete examples, this PowerPoint certainly...
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Chemistry of Carbon - Building Blocks of Life
A great review of the structure and function of carbon-based molecules important to life, especially with relevance to humans. The chemistry behind the combination of polymers and the breakdown of bonds is covered. Valuable content...
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Breaking it Down
High schoolers will identify the factors that contribute to erosion and weathering. They will start by differentiating between chemical and mechanical weathering. They then apply what they learned by playing the online jeopardy game. Key...
Texas State Energy Conservation Office
Fueling the Future
Future mechanical engineers and automotive technicians read about various solutions to using gasoline in cars. Included are electric, fuel-cell-powered, and hybrid vehicles.
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Ternary Compounds
Practice naming ternary compounds with this PowerPoint presentation. Individual slides show the patterns for memorizing the nomenclature for polyatomic ions. Several examples are included for student practice. This thorough and...
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