Curated OER
Practice Balancing Equations 1
In this balancing equations worksheet, students place the proper coefficients in front of products and reactants to balance equations. They also indicate which equations are not balanced properly.
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Unit 5- Oxidation Reduction
For this oxidation reduction worksheet, students read the notes provided about the different types of chemical reactions. Students identify the reactants and products and answer fill in the blank and short answer questions.
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Conservation During Chemical Reactions
In this chemical reaction learning exercise, 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...
American Chemical Society
What is a Chemical Reaction?
When a candle burns down, what happens to the mass that appears to be shrinking? Lesson begins with a demonstration of the chemical reaction of a candle burning. Then scholars use atom models to observe conservation of mass...
Kenan Fellows
Reaction Stoichiometry—How Can We Make Chalk?
What is a reasonable percent yield in the manufacturing process? Scholars develop a process for producing chalk in the third lesson of a six-part series. Then, they must determine the theoretical and percent yield. Discussions about...
Curated OER
Metabolism & Enzymes
More extensive than just a general overview of digestion and reactions, this slide show gives information about all areas of enzyme function. Topics like the chemistry behind efficiency of enzymes, factors that affect speed of...
Curated OER
# 18 Determination of the Set Time for Epoxy Adhesive
Students recognize epoxy glue formation as two part polymerization (usually the curing agents act as co-monomers). They monitor the reaction by the changes in viscosity of the reacting mass, the temperature rise and fall, and the...
American Chemical Society
Forming a Precipitate
Can you mix two liquids to make a solid that is insoluble? Yes, you can, and pupils see this as the lesson uses more than one combination of liquids to form a solid. Through two teacher demonstrations and a hands-on activity,...
Curated OER
2001 U.S. National Chemistry Olympiad - Local Section Exam
Sixty multiple-choice chemistry questions make up this comprehensive exam used for the 2001 US National Chemistry Olympiad. Every topic that you would expect to approach in a general chemistry class is queried on. You could easily use...
Curated OER
2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your...
Science 4 Inquiry
Maintaining Mass
Can you disprove the law of conservation of mass? Pupils observe the teacher weigh each part of a reaction. Then, the teacher weighs the result of the reaction and everyone sees that the products do not equal the reactants. Then they...
Curated OER
Chemistry Lab: Chemical Equilibrium
Students 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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WS 9.2 Equilibrium
In this equilibrium worksheet, students fill in twenty one blanks with terms related to reactions and equilibrium. They then solve four problems given chemical reactions and determine equilibrium, moles present at equilibrium and...
Curated OER
Everything about Equations
In this chemical reactions worksheet, students are given fifteen unbalanced equations and they must identify the reaction types, the phases of the products, the signs that a chemical change occurred and the sum of the coefficients of the...
Curated OER
Classifying Chemical Reactions
For this chemical reactions worksheet, students follow a flow chart to determine what type of reaction is occurring. Students then classify reactions and balance the equations. This worksheet has 2 short answer and 10 fill in the blank.
Curated OER
WS 4.4 Stoichiometry
In this stoichiometry worksheet, students are given four chemical reactions and they find quantities of products made, limiting reactants, excess reactants, and percent yield of products.
Curated OER
Limiting Reagent Practice Problems
In this limiting reagents worksheet, students solve 10 problems. They calculate limiting reagents, they calculate percent yield of particular compounds and they determine how much of products can be produced based on the limiting reagents.
Curated OER
Chemical Change
Fifth graders watch a demonstration in which a balloon is inflated using the gas created by combining vinegar and baking soda. Then, in groups, they combine various assigned substances and watch and record the results.
Curated OER
Physical vs. Chemical Changes
In this chemical reactions learning exercise, students read about the differences between physical and chemical changes in substances. Then students identify situations as either an example of physical or chemical change. Students learn...
Curated OER
Balancing Equations Online 2
In this balancing equations worksheet, students use an on line site to practice balancing equations at the beginner level, the intermediate level and the advanced level. They balance four equations for the combustion of different compounds.
Curated OER
Balancing Equations Online
In this balancing equations worksheet, students use an on line source to answer questions about balanced equations and they write balanced equations for various types of reactions. They balance equations using an on line game that allows...
Curated OER
Chemical Equations
In this chemical equations worksheet, students balance equations. This worksheet has 22 chemical equations to write out and balance.
Cornell University
Predicting Chemical Reactions
Prove the Law of Conservation of Mass through a lab investigation. A well-designed lesson asks groups to combine materials and monitor indicators for chemical reactions. Measuring the mass of the reactants and products allows individuals...
Curated OER
WS 4.4 Stoichiometry Part 2
Four balanced chemical equations are presented for your pupils to analyze. They identify limiting reagents and use dimensional analysis to compute products. This practical worksheet is one that you will want to keep in your repertoire to...