Curated OER
Mass % and Empirical Formulas
In this chemistry learning exercise, students calculate percent composition and determine the empirical formulas of compounds to complete 3 problems.
Curated OER
Solutions
For this solutions worksheet, students solve twelve problems including calculating products made in reactions, determining limiting reagents, calculating molarity of solutions, determining percent composition, and finding volumes and...
Curated OER
Percentage Composition
In this chemical compounds learning exercise, students determine the empirical formula or the molecular formula for the compounds given. Students calculate percent composition. This learning exercise has 10 problems to solve.
Curated OER
Mass Percentage and Empirical Formulas
In this chemical compounds instructional activity, students write the chemical formula and formula mass for given compounds. Students will compare the number of moles of compound in different samples. Students determine empirical...
Curated OER
Percentage Composition and Empirical & Molecular Formula
In this compounds worksheet, students determine the empirical and molecular formulas for given compounds. This worksheet has 10 problems to solve.
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
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)...
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
Calculations of Solution Concentration
Teach the process of calculating concentrations of a solute. The fourth in a series of seven chemistry lessons shows the various types of calculations including grams per liter, molarity, parts per million, and percent composition. The...
Curated OER
Unit 2 Quantities Review
In this quantities in chemistry activity, students solve 13 review problems about percent composition, significant digits, the mole, simple and molecular formulas, balancing equations, stoichiometry, limiting reagents and percent yields.
Curated OER
CheMATHstry That Sticks Right to You
Students find the percent composition of sugar in the gum. In this chemistry instructional activity, students calculate percent error from the experiment. They use dimensional analysis to convert between units.
Curated OER
Chemical Equations and Stoichiometry
In this chemical equations instructional activity, students calculate how many grams are used to in the equation written as well as the grams formed in the chemical equation. Students identify the limiting reagent in some of the chemical...
Curated OER
Ammonium Nitrate - Efficient Fertilizers
Young scholars study the chemistry of ammonium nitrate and consider the advantages and disadvantages of this compound. They compare different fertilizers and calculate the molar mass and percent nitrogen in the different fertilizers.
Curated OER
Egg Measurement
Students explore measurement and units. They measure eggs to determine their density, mass and percent composition. An inquiry approach is used for students to ascertain the mass.
Curated OER
Moles, Stoichiometry, and Concentration
In this stoichiometry instructional activity, students practice calculating moles, molar mass, and percentage composition of given compounds. This instructional activity has 55 problems to solve.
Curated OER
Working Out Empirical Formulae
In this chemical compounds worksheet, students learn the steps for determining the empirical formula of a compound and then complete 3 problems.
Curated OER
Stoichiometry
For this stoichiometry worksheet, students review mole conversions, percent composition, empirical formulas and molecular formulas. This worksheet has 6 problems to solve.
Curated OER
Stoichiometry
For this stoichiometry worksheet, learners identify types of reactions, show the products, and balance the equations. Students determine the limiting reagent, theoretical yield, and percent yield for given reactions. This worksheet has 5...
Curated OER
Chemistry Word Search
In this chemistry worksheet, learners 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
Stoichiometry
In this stoichiometry worksheet, students review definitions and equations associated with molarity, density, atomic mass, molarity, and dilutions. This worksheet has 18 word problems.
Curated OER
Chemical Composition Chart
In this Earth's crust worksheet, students determine the most abundant and least abundant elements in the atmosphere, oceans, and crust. This worksheet has 1 fill in the blank and 11 short answer questions.
Curated OER
Ocean Water
Given data about the composition of ocean water, students complete 5 different questions using a provded table that relate to the ocean water (with elements Chloride, Sodium, Sulfate, and Magnesium). Some questions require calculation,...
LABScI
Freezing Point Depression: Why Don’t Oceans Freeze?
Can you go ice fishing in the ocean? Learners examine the freezing point of different saltwater solutions. Each solution has a different concentration of salt. By comparing the freezing points graphically, they make conclusions about...