Curated OER
Are Our Chemical Measurements Accurate or Precise?
What is the difference between accuracy and precision? This worksheet has students define the terms accuracy and precision, and compare bulleye diagrams to find examples of both. Students analyze given data and determine the accuracy and...
Curated OER
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...
Curated OER
Measuring for Chemistry: Moles, Compounds, and Conversions
Through a station rotation activity, scientists complete 9 chemistry activities to complete this interactive worksheet. Concepts include molar masses, percent composition, accuracy vs. precision, mass of an object, scientific notation,...
Curated OER
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...
Curated OER
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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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...
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Atomic Absorption Determination of Zinc and Copper in a Multivitamin
Advanced lab apprentices prepare zinc and copper solutions to which they will compare the same minerals from a multivitamin. Using absorption spectroscopy, they analyze the contents of the multivitamin for concentration. This lab can be...
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Molarity Labs I & II $ III
In this molarity lab worksheet, students write down the process they took to determine the molarity of a given sample of a solution of salt. They also make two particular molar solutions in the lab and show their calculations. They answer
Santa Monica College
Introducing Measurements in the Laboratory
We use basic units of measurement to break down things and communicate clearly. The first lesson in an 11-part series teaches the proper way to measure various items. It starts simply with measuring the dimensions and areas of geometric...
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What Can We Measure About Chemicals?
In this measurement worksheet, students read about accuracy of measurements as compared to the precision of measurements. Students answer four precision problems and solve four accuracy problems.
Curated OER
What Can We Measure About Chemicals?
In this measuring chemicals worksheet, learners investigate measurements of an aluminum slab including the length, width, height, mass, volume and density. They do the same for a piece of aluminum foil and they compare their results....
Curated OER
Measurements and Their Uncertainty
In this measurements worksheet, students fill in 10 blanks, determine if statements are true or false, match 6 terms with the appropriate definitions, and solve 2 problems. Topics include converting to scientific notation, identifying...
Santa Monica College
The Density of Liquids and Solids
There are underwater rivers that flow on the ocean floor thanks to a difference in density. Scholars learn about the density in both liquids and solids in the second lesson of an 11-part series. They then determine the density of water,...
Curated OER
Investigating the Effect Of Successive Heat and Cool Cycles on a Thermoplastic material.
Students investigate hot melt glue using a hot melt glue gun as an an injection molding simulator and a melt index viscometer. They evaluate the effect of heating and cooling by weighing the glue extruded over a constant time period.
Curated OER
Water and Polymers
Students conduct qualitative and quantitative investigations based on the interaction between water and various polymers. They determine the percent moisture contained in various plastics along with a qualitative procedure to determine...
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The Study of Molecular Orientation by Linear Dimension Change of Polymeric Films
Young scholars investigate the linear dimension change of heated plastic film and relate the results to processing and service use of the materials. They calculate percent change in dimension as related to anisotropy and molecular...
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Tantalizing Tangrams
Students explore "area." In this tangram geometry and measurement lesson, students arrange tangram pieces to find the area of characters presented in a story they listen to on a website. Website information and related worksheets are...
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Measurement
Students experience a positive science experiment and study fundamental concepts of measurement.
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Painter's Area
Young scholars demonstrate geometric relationships of finding area of rectangles and squares. They apply determine the quantity of paint needed to cover the area by using the concept of quantity.
Curated OER
The Average Atom - Isotopes
Seventh graders, in groups, complete an Isotopes model and notice that atomic masses are decimal numbers. These masses are an average of all the isotopes of that element.
Curated OER
Properties of Matter
Third graders explore forms of matter through reading, hands-on science activities, and research using the Internet. Students create a booklet, directions given, that they title and decorate, to later serve as a review visualization...