Curated OER
Our Solar System - Comparing Planetary Travel Distances
NASA presents a mini-unit on distances in our solar system. It incorporates scientific concepts of gravity, mass, density, and payload while your aspiring astronauts also employ mathematics skills. They calculate speed, they determine...
Curated OER
Chapter 2 and 3 Practice Worksheet - Formulas and Compounds
For this formulas and equations worksheet, chemistry apprentices write the chemical formulas given the names. They calculate percent composition, balance equations, and calculate the mass of a substance present in a fertilizer. This is a...
Curated OER
#17 Determining the Accuracy of Selected Laboratory Glassware
Students calculate the volume of a specific mass of water placed in selected pieces of common laboratory glassware, using the density formula. They then determine the accuracy of the volumetric measurement for selected pieces of...
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...
Virginia Department of Education
Finding the Formula and Percent Composition
Do you have mole problems? If so, call Avogadro at 602-2140. The lesson plan starts with pupils working independently to solve for molar mass of ionic compounds. Then they learn to solve for percent composition and later perform an...
It's About Time
What Determines and Limits an Atom's Mass?
Provide learners with the tools to further understand nuclear energy and isotopes. Young chemists investigate the components of an atom's nucleus, use symbols to represent various isotope forms, and use the percent abundance of an atom's...
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
WS 8.4 Percentage Problems
In this percentage instructional activity, students calculate percentages given various types of problems. They calculate percent of compounds in a solution, they calculate mass of compounds given percentages of solutions, and they...
Curated OER
Percent Mass, Moles, and Avogadro Worksheet
In this moles worksheet learners complete a set of calculations to find how many atoms and moles are in different substances.
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...
Kenan Fellows
Density
Most scholars associate density with floating, but how do scientists determine the exact density of an unknown liquid? The third activity in a seven-part series challenges scholars to find the mass and volume of two unknown liquids. Each...
Curated OER
Mass % and Empirical Formulas
In this chemistry activity, students calculate percent composition and determine the empirical formulas of compounds to complete 3 problems.
Curated OER
Percent Applications
In this percent application worksheet, students solve word problems containing concepts such as percent, proportions, sale price, discounts, interest, commission, tax, and more. Students complete 11 problems.
Curated OER
Converting Amount to Mass
In this elements worksheet, students practice converting a given amount of an element to the mass using its molar mass. This worksheet has 12 problems to solve.
Curated OER
Stoichiometry
In this stoichiometry activity, students use balanced equations for chemical reactions to determine the percent yield and the mass of product produced. This activity has five problems to solve.
Curated OER
Unit 0 Review - Measurement Lab Equipment
Review questions like these can be used in your biology, chemistry, physics, or earth science classes! They assess scientists' understanding of laboratory measurement tools including graduated cylinders, thermometers, and balances. They...
Curated OER
Percent / Percentage Word Problems (Part 2)
In this online math worksheet, students solve word problems associated with percentage. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific teaching tool!
Curated OER
1999 U.S. National Chemistry Olympiad Part III
In this chemistry olympiad laboratory worksheet, learners design and carry out two experiments. They design one experiment to test for the percent mass of a substance in a solution and they design another experiment to identify two...
Curated OER
The Mathematics of Chemical Formulas
Wow! This is one of the most exhaustive presentations on finding chemical formulas that you will come across! Beginning with the basics, and leaving junior chemists with procedures and concrete examples, this PowerPoint certainly...
Curated OER
Percent Deviation Rocks and Minerals
In this rocks and minerals worksheet, students calculate the percent deviation from various mass measurements taken of rocks or minerals. This worksheet has 10 problems to solve.
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
What Can We Measure about Chemicals?
For this measuring chemicals worksheet, students determine the accuracy and precision of measurements and distinguish between the two. They find the percent composition of compounds, the molar mass of compounds and the volume of gases at...
Curated OER
Penny Lab
In this percent composition worksheet, young scholars carry out an experiment to determine the percent of zinc in a penny. They write a balanced equation for the chemical reaction they performed with the penny and hydrochloric acid.
Curated OER
Additional Stoichiometry Review Problems
In this stoichiometry worksheet, students interpret a chemical equation, determine number of moles produced or mass of product, and solve for the limiting reactant for reactions. This worksheet has 25 problems to solve.
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