Curated OER
2009 U.S. National Chemistry Olympiad National Exam - Part I
The 2009 version of the first part of a national chemistry competition is posted for your use with olympiad hopefuls. Test takers deal with 60 multiple choice questions covering an entire year of chemistry curriculum. Use this to...
Curated OER
Eggs'ceptional Experiments
Students see evidence of chemical reaction and follow the scientific method to hypothesize, observe, and reach conclusions. They conduct a series of egg based experiments such as forming crystals and complete journal activities as a...
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2008 U.S. National Chemistry Olympiad Part III
In this chemistry olympiad lab worksheet, chemists are required to design two experiments. In one, they design an experiment to identify seven solutions given to them in pipettes. In the other, they design an experiment to determine the...
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Everyone Has Problems, but Chemists Have Solutions
Students observe molar solutions being prepared and gain an understanding of concentration. In this solutions lesson plan, students observe a solution of drink mix being prepared parallel to a solution of salt water. Students gain an...
Teach Engineering
Flame Test: Red, Green, Blue, Violet?
Let the true colors shine through. Pupils conduct a flame test to identify an unknown element. Class members calculate and prepare specific molarity solutions of three chemicals. Using their observations of the colors emitted, they...
It's About Time
Chemistry and Physical Changes
Engage the class like never before as pupils learn to differentiate between multiple physical and chemical changes by conducting a list of small experiments, most often with household materials. They make observations and discuss the...
Chymist
Esters: An Introduction to Organic Chemistry Reactions
Scratch and sniff an introduction to organic chemical reactions. A creative lesson has individuals study the esters commonly used in scratch-and-sniff stickers and advertisements. Following the lab procedure, scholars create the organic...
Curated OER
Chemical Reactions
In this chemical reactions worksheet, students write chemical equations and calculate the moles of each product. This worksheet has 4 word problems.
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Chemical and Physical Changes Lab
In this chemical and physical change worksheet, students conduct a variety of experiments with unknown solutions and make observations. Students determine if the properties of the solutions have changed and if there is a chemical or...
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Chemical Reactions
In this chemical reaction worksheet, students investigate the results of mixing calcium chloride with sodium bicarbonate. They observe the chemical and physical changes that occur, identify the properties of the chemical before and after...
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Types of Chemical Reactions
Students explore the different types of reactions and write the chemical equations for them. For this chemical lesson students identify different reactions and predict the product outcome.Â
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Conservation During Chemical Reactions
For this chemical reaction worksheet, students are given the details of an experiment where sodium chloride and silver nitrate are mixed in a chemical reaction. Students answer nine questions about the chemical reaction, they determine...
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Chemical Reactions
In this chemical reactions worksheet, students solve 16 exercises by writing and balancing chemical reactions. They calculate the concentration of various solutions.
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Environmental Problems and Solutions
In this environmental problems and solutions worksheet, students are given a list of 25 environmental problems. They match them with a given solution and paste the matching pairs to a piece of construction paper.
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Chemistry: Chemical Reaction
In this chemical reactions worksheet, students name the reactants and products, balance the equation, calculate the molecular weight of the reactants and products, and classify each reaction type. Students fill in a table of solubility...
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Chemistry Lab: Chemical Equilibrium
Young scholars investigate the effects of adding or removing a reactant or a product on chemical equilibrium. In this equilibrium lesson plan, students add or remove ions to solutions to determine the effects on equilibrium. They make...
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Chemical Change vs. Physical Change
In this physical and chemical change worksheet, students are given a description of these changes. They are given ten changes that the students identify as chemical or physical changes based on their reading.
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Physical and Chemical Changes
Students investigate chemical and physical changes. In this physical and chemical change lesson plan, students perform 3 experiments in the lab to observe changes in matter. They determine that no new substances are formed in physical...
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Chemical Reactions
In this writing chemical reactions worksheet, students solve 15 problems on their own paper using a 3 step-problem solving approach. In addition, students write six balanced equations and classify each reaction. They also write equations...
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Mixtures, Solutions and Matter
In this mixtures, solutions and matter worksheet, students are given 12 terms and they cut out 12 definitions to match with the terms. Topics include types of mixtures, types of matter such as atoms, molecules and compounds and solutions.
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Chemical Equations and Stoichiometry
In this chemical equations worksheet, students write ten combustion equations given a hydrocarbon compound. They write the equations and balance each.
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Relating Moles to Coefficients of a Chemical Equation
Young scholars investigate the coefficients in a chemical equation and their relation to moles. In this moles and coefficients lesson plan, students perform a single replacement reaction of copper (II) sulfate and zinc and find the ratio...
American Chemical Society
Formation of a Precipitate
Conclude this chemical change unit by having your class combine two liquids that result in formation of a precipitate. The learners discover that chemical reactions result in new materials. Make sure to consider all of the preceding...
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Chemical Equations
In this chemical equations worksheet, students complete a paragraph by filling in the 17 terms associated with chemical equations.