Curated OER
Theoretical Yield and Percent Yield in Chemical Reaction
In this stoichiometry worksheet, students solve several problems using the stoichiometric method. Students find the percent, theoretical, and actual yield for all problems presented.
Curated OER
Condensation Polymerization
This organic chemistry lab activity is appropriate for teaching polymerization, percent yield, melting point, or the types and uses of polymer materials. Chemistry pupils imagine that they are working for a company to develop a special...
Curated OER
Gravimetric Determination of the Nonvolatile Content of Paint
Here are the instructions for leading your advanced chemists though the process of measuring the nonvolatile components in a sample of paint. No student handout is provided, so you may want to create one based on the procedure explained....
Curated OER
Condensation Polymerization: Preparation of Thiokoll® (Polysulfide Rubber)
This lab activity is geared toward experienced chemistry learners, in particular, those who are familiar with organic chemistry. They will create a synthetic elastomer and then make observations and measurements of its different...
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 instructional activity of a six-part series. Then, they must determine the theoretical and percent yield....
Santa Monica College
Mole Ratios and Reaction Stoichiometry
Stoichiometry sounds complicated, but it really means the study of the amount of substances involved in a reaction. The sixth lesson in an 11-part series has scholars use stoichiometry to find the theoretical yield of a reaction. Then,...
Beyond Benign
A Green(er) Redox Reaction
Do some experimentation with reduction-oxidation! Stoichiometry superstars use a single-replacement reaction to study limiting reactant, theoretical yield, and the reactivity of metals through a lab activity. The teacher's guide includes...
Beyond Benign
Green"er" Precipitation Reaction
All sodium carbonate may not have the same amount of carbonate, but it should have the same percent. Learners write and balance an equation to predict the chemical reaction between sodium carbonate and zinc acetate. Through the lab...
Curated OER
Molarity, Excess and Percent Yield
In this molarity worksheet, students are given balanced equations and they are to calculate the mass or volume of reactants and products. Students calculate the theoretical, percentage, and actual yield for chemical equations. This...
Illustrative Mathematics
Finding a 10% increase
A quick problem to test your mathematicians' knowledge on percent increase. Two different solutions are provided, mental math and computing. Ask your learners to include a description of what they did to supplement their answer.
Royal Society of Chemistry
Aspirin—The Wonder of Medicine
What do aspirin and the willow tree have in common? Scholars of chemical synthesis engage in a fascinating reaction to make their own aspirin samples. The lab uses thin layer chromatography analysis, includes stoichiometric calculations,...
Curated OER
Laboratory: Fe and Cu (II) Redox Reaction
In this redox reaction laboratory sheet, chemists answer eight post-lab questions about oxidizing agents, reducing agents, oxidized and reduced substances, and percent yield of products. You will need to provide a proedure for...
Curated OER
Condensation Polymerization: Preparation of Nylon 6/6
Students participate in a lab activity in which they synthesize nylon 6/6, calculate the percent yield by mass, identify the polymer as thermoplastic or thermoset, and determine the melting point, density and end-product use of the polymer.
Chymist
Alum from Waste Aluminum Cans
Turn aluminum cans into pickles! An engaging experiment has learners chemically change aluminum into a substance with many purposes including the manufacture of pickles. After performing the chemical conversion, the experimenters verify...
Curated OER
Missouri Rice Farming
Sixth graders investigate rice farming in Missouri. For this percentages lesson, 6th graders determine how much rice production has increased over time. Students find this number in percentages. Students then figure the percent of acres...
National Nanotechnology Infrastructure Network
Lab 1: Nanocatalysts Clean Your Car Emissions
What a big job for such a small particle. Young scientists learn about the role of nanoparticles in catalytic converters for cars. They conduct an experiment to create alginate-MnO2 catalytic spheres.
Curated OER
Iron Filings
Students conduct an experiment in which a solution of copper(II) sulfate is added to iron filings. They write and balance the equation for the reaction that occurs and calculate the amount of iron that reacted and the percent yield of...
Cornell University
Radical Reactions
The radical reactions of polymers seems abstract to many pupils, but this activity turns them into a fun building game. Scholars use dice and building pieces to build polymers. Then, they determine the theoretical and experimental weight...
Curated OER
What proportion of rough rice is prepared into consumable rice?
Fifth graders find the percentages of rough rice that can be eaten. In this percentage lesson, 5th graders look at 100 lbs. of rough rice and see the steps needed before it can become the white rice sold in stores. They find the...
Curated OER
Japan: Farmers Face Global Competition
Students examine the history of Japanese farming and current international farming issues. They conduct Internet research, create a chart to illustrate the history of farm products in Japan, and simulate a WTO meeting.
Curated OER
Organic Farming / Agriculture
Want an organic farming resource packed with experiments, background information, science fair projects, and topics of interest for further research? Here it is. Young environmental scientists can explore concepts involved in organic...
Curated OER
Nearsightedness
Examine the processes scientists go through to develop their conclusions. Using the internet, research the problem of nearsightedness and identify anyone they know with the condition. Discover the debate in the science world on this...
Curated OER
Groundwater Movement
Students study groundwater movement beneath the surface of the Earth. In this agriculture lesson, students experiment with how water moves through rock materials such as sand, gravel, and clay.
Curated OER
Esters as Food Flavorings
High schoolers produce esters in the laboratory by combining different carboxylic acids with different alcohol. In this esterification lesson plan, students experiment with 3 carboxylic acids and 3 alcohols to produce 3 esters with fruit...
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