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Assessment
Curated OER

2001 U.S. National Chemistry Olympiad - Local Section Exam

For Students 9th - 12th
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...
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Performance
Radford University

Is Fall Normal?

For Teachers 9th - 12th Standards
Fine the normality of fall measurements. Pairs collect measurements of fall leaves and one other fall object. Using the measurements, the groups determine the descriptive statistics for the object and using the Empirical Rule, figure out...
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Unit Plan
Beyond Benign

Can You Hear Me Now? Cell Phone Accounts

For Teachers 9th - 12th Standards
How sustainable are cell phones? Throughout the unit, learners explore the issues around cell phones concerning sustainability. Class members take a graphical look at the number of cell phones across the world using a box-and-whisker...
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Interactive
CK-12 Foundation

Computing Probabilities for the Standard Normal Distribution: The FDA and Food Safety

For Students 9th - 12th Standards
To recall or not to recall, that is the question. Using provided data, pupils calculate the percent of people that may fall ill on average. The scholars determine the standard deviation based upon the mean and the empirical rule, then...
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Worksheet
Curated OER

Chapter 2 and 3 Practice Worksheet - Formulas and Compounds

For Students 9th - 12th
In 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...
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PPT
Curated OER

Empirical Formula

For Teachers 9th - 12th
Plenty of time was invested in creating this detailed presentation. The first slide alone includes several steps that support your explanation of percent composition, a precursor to understanding how to write empirical and molecular...
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Worksheet
Curated OER

Oxidation Numbers and Ionic Compounds

For Students 9th - 12th
In this oxidation numbers and ionic compounds worksheet, students write the formula for compounds given ions, they write the ions given formulas, they list oxidation numbers for elements, they write formulas for compounds and they name...
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Lesson Plan
Curated OER

WS 5.5 Percent Composition

For Teachers 10th - 12th
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.
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Lesson Plan
Curated OER

Chemistry Practice

For Teachers 10th - 11th
In this chemistry overview worksheet, students calculated the volume of different gases and liquids given in a word problem. Students had to calculate the molecular mass and write the empirical formula and the molecular formula.
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PPT
Curated OER

Empirical Formula: From Percentage to Formula

For Teachers 9th - 12th
Starting with definitions of empirical and molecular formulas, this slide show guides pupils through the ways to calculate and produce chemical formulas as percentages and molar ratios. A number of examples are given for viewers to try...
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Worksheet
Curated OER

Empirical and Molecular Formulas

For Students 9th - 12th
In this compounds worksheet, students write the empirical formulas or the molecular formula for the given chemical compounds. This worksheet has 20 problems to solve.
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Worksheet
Curated OER

Percentage Composition and Empirical & Molecular Formula

For Students 10th - 12th
In this compounds worksheet, students determine the empirical and molecular formulas for given compounds. This worksheet has 10 problems to solve.
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Worksheet
Curated OER

Percentage Composition

For Students 9th - 12th
In this chemical compounds worksheet, students determine the empirical formula or the molecular formula for the compounds given. Students calculate percent composition. This worksheet has 10 problems to solve.
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Worksheet
Curated OER

Formulas from Masses

For Students 10th - 12th
In this mass worksheet, students determine the percentage composition of given compounds. Students write the empirical formula from the percentage composition. This worksheet has 5 problems to solve.
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Worksheet
Curated OER

WS 4.8-Review

For Students 10th - 12th
In this chemistry review worksheet, students solve a variety of problems including balancing equations, solving for unknowns using dimensional analysis, finding percent yields, limiting reactants and empirical formulas.
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Worksheet
Curated OER

WS 4.5 Percent Composition and Empirical Formula

For Students 10th - 12th
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.
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Worksheet
Curated OER

Combustion Analysis Worksheet

For Students Higher Ed
In this combustion instructional activity, students are given directions as to how to analyze a combustion reaction and they then solve five problems using this process.
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Worksheet
Curated OER

Empirical and Molecular Formula Sheet

For Students 10th - Higher Ed
In this formulas learning exercise, students solve eight problems and are required to write the empirical and molecular formulas given percentage of elements or quantities in mass.
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Worksheet
Curated OER

Stoichiometry

For Students 10th - Higher Ed
In this stoichiometry worksheet, students review definitions and equations associated with molarity, density, atomic mass, molarity, and dilutions. This worksheet has 18 word problems.
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Worksheet
Curated OER

Empirical and Molecular Formula

For Students 10th - 12th
In this formulas activity, students review how to write compounds in their empirical formula and molecular formula. Then students complete 4 problems.
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Worksheet
Curated OER

Chemical Equations and Stoichiometry

For Students 10th - 11th
In this chemical equations worksheet, 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 equations....
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Worksheet
Curated OER

High School Chemistry Questions

For Students 11th - Higher Ed
In this chemistry learning exercise, students determine the number of water molecules is a given volume of water. Students determine the empirical formula for given compounds from the percentage mass of elements. This learning exercise...
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Worksheet
Curated OER

Chemistry 151 - Final Review

For Students Higher Ed
In this chemistry review worksheet, students give atomic symbols for given atoms, calculate moles, determine empirical formulas, and balance chemical equations. This worksheet has 1 drawing, 9 fill in the blank, and 12 word problems.
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Worksheet
Curated OER

Chemical Equations

For Students Higher Ed
In this chemical equations worksheet, students determine the empirical formulas for chemical compounds and balance chemical equations. This worksheet has 1 fill in the blank question and 4 problems to solve.