Cornell University
What Is Rust?
Why do metals rust differently? Scholars experiment with metal combinations in a hands-on activity. They create unique environments with different metals and compare the rate and amount of rust for each.
Pingry School
Synthesis of an Insoluble Ionic Salt: A Stoichiometry Experiment
Challenge young scientists to design their own experimental procedures. They write the procedure for properly preparing two grams of a water-insoluble ionic salt. To finish, they perform the experiment and collect data to prove their...
Curated OER
7.012 F’04 Problem Set 1 ~ Biology
Course identification information is included in the upper left corner as well as within the title of this learning exercise. If you overlook or remove that information, you are left with a tremendous college biology assignment. There...
National Institute of Open Schooling
Coordination Compounds
Cyanide, a coordination compound, is used in the extraction of gold and silver. Part 24 in the series of 36 delves into the world of coordination compounds. Classes learn, through readings, discussions, and answering questions, how to...
Curated OER
Worksheet 1
For this math worksheet, students describe the difference between a partial and an ordinary differential equation. They give examples of 1st, 2nd, and 3rd order differential equations. Students apply this information to predator/prey...
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Qualitative Analysis
In this qualitative analysis worksheet, students read about all the different tests that can be done in chemistry to give qualitative results. Tests include flame tests, forming precipitates with sodium hydroxide, using sodium hydroxide...
Curated OER
Rock Hounds
Students receive a basis for understanding the three main classifications of rock: igneous, sedimentary and metamorphic. They engage in a hands-on activity designed to give them an appreciation for rocks and minerals.
Curated OER
Chemical Bonding and Shapes of Molecules
In this chemical bonds worksheet, students review the different types of bonds, Lewis dot structures, ions, and molecule shapes. This worksheet has 10 matching, 17 multiple choice, and 3 drawing questions.
Curated OER
Displacement Reactions and Acid/Base reactions
In this reaction instructional activity students complete a list of questions and decide if the products are soluble or insoluble then write out the formula.
Curated OER
Identification of Different Compounds and Substances
High schoolers conduct a series of tests to identify unknown compounds. In this chemistry lesson, students compare the physical and chemical properties of substances. They collect data and formulate a conclusion.
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Chemical Formula Writing Worksheet
In this chemistry worksheet, students practice forming the correct chemical equations for the twelve problems presented. The second page has the answers.
Curated OER
Spontaneous Cell Reaction
In this spontaneous cell reaction worksheet, students write equations for these types of reactions and determine the voltage associated with the cell. This worksheet has 4 problems to solve.
Curated OER
Applying the Activity Series
In this activity series learning exercise, students read about single replacement reactions and are given a table with the activity series of metals and nonmetals. Students use the activity series to predict if reactions will occur and...
Curated OER
Hydrates Worksheet
In this chemistry activity, learners look for the concepts connected to hydrates and answer the variety of questions given for the assessment.
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Fluids, Electrolytes, and Acid-Base Balance Study Questions
In this fluids, electrolytes, and acid-bas balance system study questions, students define 12 words associated with this system. They answer 12 short answer questions about the components of the acid-balance system.
Curated OER
Displacement Reactions and Acid/Base Reactions
In this chemical reactions worksheet, students review the solubility rules for common salts. Students determine the molecular equation, ionic equation, and net ionic equation for specific reactions. Students calculate moles and volume...
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Chemical Bonding and Shapes of Molecules
In this chemical bonding worksheet, students review the different types of bonds and calculate the number of valence electrons in molecules. This worksheet has 11 matching and 15 multiple choice questions.
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Electrolysis of Water
Ninth graders examine the electrolysis of water by completing an experiment. In this water lesson students will explain how hydrogen can be extracted from water and how energy flows through an electrolysis system.
Curated OER
A Self Directed Inquiry into the Identification of Unknowns
Students gain experience in designing an experiment and use logic in selecting specific tests for unknowns. Students recognize the use of spreadsheets in helping one to make clear comparisons.
Curated OER
Water Testing
In this water testing pre-lab activity, students describe positive ions, precipitate, and the Tyndall effect. This activity has 14 short answer questions.