Curated OER
Relative Mass Formula, Atomic Formula, and Empirical Formula
After giving the definitions of the different compound terms and formulas, equations are provided to teach your chemists to calculate different values. Relative formula mass, atomic mass, and empirical mass are shown and explained with...
Curated OER
BMI: Body Mass Indicator
Students discover their body weight and composition. For this health lesson, students use a body mass indicator to identify their percentage of body fat. Students develop an exercise plan and record progress throughout a month.
Curated OER
Molar Mass and Percentage Composition
In this chemical compounds worksheet, students calculate the molar masses and the percentage composition for the given compounds. This worksheet has 8 problems to solve.
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2006 U.S. National Chemistry Olympiad Part III
In this chemistry Olympiad lab worksheet, students are given two lab problems to design experiments. Topics include determining the mass percentage of a given compound and determining an unknown metal using quantitative and qualitative...
Curated OER
Using Percentage in Compound Composition
In this percent composition worksheet, students find the percent of each type of atom in a compound, they find the total mass of a sample and they determine the mass of particular atoms in a compound.
Curated OER
WS 8.4 Percentage Problems
In this percentage worksheet, 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 percentages of...
Curated OER
Mass Percentage and Empirical Formulas
In this chemical compounds worksheet, 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 formulas. This...
Curated OER
BMI For Kids - Body Mass Index
Promote healthy lifestyles with an interactive that provides young learners with healthy nutrition and exercise messages. Class members plug their height and weight information into an online body mass index calculator, and hear positive...
Curated OER
Formulas from Masses
In this mass worksheet, learners 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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Solar Storms-Fractions and Percentages
In this solar storms worksheet, students find the percentage of X-Flares and Halo CMEs that occurred in solar storms and complete a Venn Diagram comparing the numbers of each.
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Solar Storms: Odds, Fractions and Percentages
In this solar storms worksheet, learners read about the correlation between different astronomical events to find patters and new 'laws' of nature. Students use given statistical information about solar flares and coronal mass ejections...
Curated OER
What is the Percentage of Copper in "Copper" Coins?
Whether in the UK or in the US, the mass of the copper in a copper alloy penny can be determined. If you are in the US, just note that on the lab sheet, a penny is identified as a "1p piece." The penny is dissolved by young chemists in...
Curated OER
Chapter 2 and 3 Practice Worksheet - Formulas and Compounds
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...
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
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
Percent / Percentage Word Problems (Part 2)
In this online math instructional activity, 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...
Curated OER
Ionic Compounds
In this compounds worksheet, students review the structure and properties of ionic compounds, their formulas and nomenclature, and molecular mass and percentage composition. This worksheet has 4 short answer questions and 7 problems to...
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Average Atomic Mass
In this average atomic mass worksheet, high schoolers read about how the protons and neutrons make up the atomic mass of an element. They find the average atomic mass given four problems.
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Percentages
In this percentages worksheet, students read about how to express numbers as fractions, convert to decimal form and find the percent. They practice by solving four problems using the method they read about.
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Lab: Percent of Composition of KClO3
Students find the percent of oxygen in potassium chlorate. In this percent composition lesson plan, students heat a solution of potassium chlorate using a catalyst, manganese dioxide, to decompose the potassium chlorate and release...
Curated OER
Empirical Formula: From Percentage to Formula
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...
Curated OER
Determining Percent Composition
In this percent composition worksheet, students calculate the percent composition of compounds using their formula masses and masses of individual elements. They solve nine problems including calculating percent composition, finding...
Santa Monica College
The Composition of Potassium Chlorate
The third activity in a series of 11 begins by using thermal decomposition of potassium chlorate to determine the mass percent of oxygen. Then a second activity allows scholars to demonstrate that the resulting residue is from a...
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...