Curated OER
Mining an Ore
Students investigate how to determine the percent composition of a mineral in an ore. In this mining an ore lesson plan, students use chocolate chips cookies to represent an ore and they remove precious minerals (the chocolate chips)...
Curated OER
WS 4.5 Percent Composition and Empirical Formula
In this compounds worksheet, students determine the empirical formulas and percent compositions of compounds given chemical formulas, mass of elements in compounds and percentages of elements in compounds.
Curated OER
Empirical and Molecular Formula Sheet
For this formulas worksheet, students solve eight problems and are required to write the empirical and molecular formulas given percentage of elements or quantities in mass.
Curated OER
Do Fast CMEs Produce Intense SPEs?
For this coronal mass ejections and Solar Proton Events worksheet, students create a Venn Diagram to represent given data. They answer 5 questions about the data related to the number of coronal mass ejections and Solar Proton Events...
Curated OER
Percentages in Chemistry
In this algebra worksheet, students solve for percentages using chemical reactions as a real life scenario. The convert to grams when determining percentage of mass. There are lots of examples on how to convert for different units.
American Psychological Association
Childhood Obesity
The United States leads the world in the percentage of obese adults and children. Why? What can be done about the problem? High school psychology classes adopt a problem-focused approach to investigating childhood obesity and then...
PBS
The Lowdown — Exploring Changing Obesity Rates through Ratios and Graphs
Math and medicine go hand-in-hand. After viewing several infographics on historical adult obesity rates, pupils consider how they have changed over time. They then use percentages to create a new graph and write a list of questions the...
Radford University
Exploring Equations through Life Goals
What do I want to do when I grow up? Learners research job categories and determine a career within the category. Using the chosen job, pupils find the hourly wage and calculate future income based on percentage wages. Individuals then...
Curated OER
Moles, Stoichiometry, and Concentration
In this stoichiometry learning exercise, students practice calculating moles, molar mass, and percentage composition of given compounds. This learning exercise has 55 problems to solve.
Curated OER
Mixtures, Percentage and Equation Stoichiometry
In this chemistry instructional activity, students answer 2 problems on solution stoichiometry. They calculate the mass of products formed given a certain amount of reactant.
Curated OER
Carbon Dioxide Increases
In this atmospheric carbon dioxide worksheet, students use a graph of the Keeling Curve showing the increase in atmospheric carbon dioxide since 1958 to solve 6 problems. They determine the rate of increase, the find the percentage of...
Curated OER
Isotopes Worksheet #1
In this isotopes worksheet, students find the average atomic mass given the masses of two isotopes. They also calculate the atomic mass of elements given the percentages of each isotope.
Curated OER
Percentage Composition
In this chemical compounds worksheet, high schoolers determine the empirical formula or the molecular formula for the compounds given. Students calculate percent composition. This worksheet has 10 problems to solve.
Curated OER
Lab-Percent of Composition of KClO3
Students find the percent composition of oxygen in potassium chlorate. For this percent composition lesson plan, students heat a sample of potassium chlorate to decompose it into potassium chloride and oxygen. They weight their initial...
Curated OER
WS 5.5 Percent Composition
In this percent composition worksheet, students find the percentages of atoms in compounds and they determine empirical formulas given the percent of each atom in a compound.
Science Geek
Percent Composition, Empirical and Molecular Formulas
Help your pupils understand when empirical becomes molecular. The lesson presentation demonstrates the connection between empirical formulas and molecular formulas. Then, given percent composition, the lesson demonstrates the steps to...
Curated OER
All About Me: Measuring Height and Weight
Students take personal fitness inventories. In this personal health instructional activity, students take measurements of their heights and weights. Students record the data, calculate their BMI, and then chart their physical activity.
Curated OER
Chemistry Word Search
In this chemistry worksheet, students locate and identify various vocabulary terms related to chemistry. There are nine words/phrases located in the puzzle to find.
Curated OER
Empirical and Molecular Formula
In this formulas worksheet, students review how to write compounds in their empirical formula and molecular formula. Then students complete 4 problems.
Curated OER
Finding Concentration
In this determining concentration worksheet, students are given the equations to find the concentration of a solution in grams per milliliter, to determine the concentration in parts per million, to determine percent mass and percent...
Curated OER
Reacting Masses Problems
In this reactions learning exercise, student determine the products of a reaction, balance an equation, and calculate the number of moles in an experiment. This learning exercise has 4 problems to solve.
National Institute of Open Schooling
Chemical Arithmetics
Substances with the same empirical and molecular formula must be differentiated by their structural formula. Part two in a series of 36 has pupils using chemical formulas to calculate how much of a compound is present in a given...
Nuffield Foundation
Investigating the Effect of Concentration of Blackcurrant Squash on Osmosis in Chipped Potatoes
Model and explore osmosis using squash and potatoes. Young scientists expose chunks of potatoes to different concentrations of a squash solution. They compare the weights of the chunks before and after exposure to the solution and use...
Curated OER
Counting Atoms in a Molecule
In this counting atoms in a molecule worksheet, students read about the molecule propanal that was discovered by the giant radio telescope in the Milky Way Galaxy. Students solve 6 problems where they find the number of atoms in the...