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Moles Lab Activities
General chemistry class members engage in a mini-unit on mole conversions. Through nine lab activites with varying degrees of difficulty, they practice measuring mass and volume, molar calculations, and stoichiometry. Terrific teacher...
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2007 U.S. National Chemistry Olympiad Local Section Exam
Sixty multiple choice questions cover the entire gamut of chemistry concepts. This is the local section of the U.S. National Chemistry Olympiad, where your chemistry candidates take a shot at entering the national competition. They...
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Quality Control at Kality Krunchers Dill Pickle Factory
In a hypothetical scenario, food chemists use titration to concoct a brine solution for producing the crunchiest pickles. They also analyze store-bought pickle juices. In addition to reinforcing titration techniques, the lesson requires...
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Hydrogen Peroxide Analysis
A scenario is presented for chemistry techs to address. Using titration techniques, they must analyze hydrogen peroxide solution samples. They evaluate accuracy and precision in the process. They also gain experience consulting the MSDS...
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The Floating Egg Problem
This is the grown-up version of the classic "float an egg in salt water" experience, plus an experiment in soap making. High schoolers explore density, but more importantly, practice accuracy, precision, and the use of significant...
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Gas Law Investigation
Investigators collect the carbon dioxide produced when an antacid tablet is activated and identify what alteration produced the most gas. They also collect the gas in a buret in order to practice precision. Then they choose between two...
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Giants of the Century
Middle and high schoolers study significant people who shaped the 20th-century history and are introduced to database tools. Researchers use the Internet to research five 20th century history makers. They write a short biography of five...
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Practice Final
A full-fledged practice final prepares pupils for their general chemistry final exam. If they complete these 57 multiple-choice questions correctly, they will be well-prepared. Note: even though the questions are multiple-choice, there...
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Significant Figures II
For this significant figures worksheet, learners solve nine problems. They indicate significant figures in given numbers, they perform calculations and express their answers with the proper number of significant figures and they solve...
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WS 1.6 Significant Figures II
In this significant figures worksheet, learners indicate the number of significant figures in given measurements. They also perform calculations of multiplication, division, addition and subtraction and identify the number of significant...
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Significant Figures in Calculations
Significant figures estimate the precision of your calculations. Teach your high school scientists how to count and identify significant figures at the beginning of the school year so that they are adept at using them in their...
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Metric System Conversion Factors
In this metric system conversion activity, students use dimensional analysis to convert metric and English units. There are 5 metric to metric problems and 10 metric to English problems.
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Organizing Data
In this data worksheet, students convert measurements to significant notation and determine the number of significant digits. This worksheet has 4 fill in the blank and 2 short answer questions.
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Significant Figures Worksheet
In this math worksheet, high schoolers perform basic mathematical operations on 5 problems and express answers in correct number of significant figures.
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Unit Conversions
In this unit conversions worksheet, students calculate and convert measurements from one unit to another. They complete 109 short answer and problem solving questions involving unit conversions.
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Washington D.C. from Space
In this Washington D.C. from space instructional activity, students use a picture generated by the International Space Station and they find the scale of the image. They determine the actual size of features in the image, they find the...
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Magnetic Forces and Kinetic Energy
In this magnetic forces and kinetic energy worksheet, students use the formula that relates the speed of an electron in a plasma cloud to its energy to find the speed of 6 different plasma cloud electrons. They answer 5 questions that...
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Unit Conversion 2
In this unit conversion worksheet, students solve 10 problems using conversion factors to find their answers. They express their answers using scientific notation with the proper number of significant figures.
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Scientific Notation III
In this scientific notation worksheet, students solve 10 problems where they multiply and divide numbers using scientific notation and they express their answers with the proper number of significant figures.
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Jupiter and Io
In this Jupiter and Io worksheet, students use a diagram of the planet and its moon to find the dimension of the image, the width of the largest feature in the atmosphere of Jupiter, the width of the smallest feature in the atmosphere of...
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Estimation and Significant Figures
Students investigate the importance of significant figures through measuring and estimating. In this estimation and significant figures lesson plan, students measure pieces of paper and round their figures to the nearest marking on the...
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Even More Significant Figures
In this significant figures activity, students solve 12 multiplication, division, addition and subtraction problems and express their answers in scientific notation with the proper number of significant figures.
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Significant Figures: Part Deux
In this significant figures worksheet, students solve addition, subtraction, multiplication and division problems and express their answers with the proper number of significant figures.
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Unit Conversion Problems
In this unit conversion learning exercise, students solve 15 problems by using conversion factors to find their answers. They show all their work and express their answers in scientific notation with the proper number of significant...