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Composition of Matter Worksheet
In this matter worksheet, students complete a table in which they compare elements, compounds, and mixtures. Once table is finished, they answer 6 fill in the blank questions.
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The Separation Problem
In this mixture separation activity students problem solve a variety of ways to separate mixtures. After generating solution ideas to separating mixtures of solids prompts on the one page sheet students are prompted to respond in short...
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The Conceptual Theory of Chromatography
High schoolers conduct a lab to determine the best way to separate a variety of mixtures choosing between paper, thin layer and column chromatography. They use chromatography techniques to identify unknown substances and submit a lab...
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Chapter 16 Review- General Science
In this review of general science learning exercise, students classify examples of matter as mixtures or substances, homogeneous or heterogeneous mixtures, or elements or compounds. Students also convert several examples using the...
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Solids and Water
Learners investigate mixtures made of water and familiar solid materials. They observe and discuss the changes that occur immediately and set the mixtures aside for a day. Finally, students observe the mixtures, note changes, and graph...
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Matter and Change
In this matter and change worksheet, students answer 24 questions on topics such as elements, compounds, mixtures and chemical reactions. Students answer questions about the properties of matter such as their physical state and shape. In...
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The Electric Sieve
Students examine different mixtures and how they can be separated. In this electric sieve instructional activity students complete an activity that allows them to separate mixtures.
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A Compound Problem
For this compounds worksheet, learners compare the differences between compounds and mixtures. This worksheet has 3 short answer questions.
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Chromatography
Students study about chromatography, a process used to separate mixtures.
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Colored Dots 1
Students observe that colored markers are a mixture of many different colors by performing a chromatography experiment. They make observations, record information, and make generalized inferences from their observations.
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Solubility
In this solubility worksheet, pupils calculate the final concentrations of the ions involved in a chemical mixture. Students calculate the solubility of different compounds. This worksheet has 13 problems to solve.
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The Pure, The Mixture, The Unknown
Ninth graders participate in classroom discussions, demonstrations and hands-on laboratory activities about pure substances and mixtures with a focus on common household materials. They investigate: What is a pure substance? What is a...
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Snow Science Art
Students fold three types of paper into fourths (black construction paper, glossy white paper and white construction paper). They make predictions about which mixture make the best snow crystal picture.
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Chromatography
Students investigate the separation of mixtures using plant pigments. Using everyday items, they demonstrate the separation of pigments in plants through the process of chromatography.
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Solutions and Suspensions
Students explore matter by conducting an in class demonstration. In this liquid mixture lesson, students identify the difference between a solution in which a solid dissolves into liquid, and a suspension where the solid doesn't dissolve...
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Dimensional Analysis Worksheet
For this dimensional analysis worksheet, students solve six word problems using dimensional analysis to solve for an unknown. These include finding density, and converting from one unit to another. They also categorize samples as...
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Percents and Mixture Problems
In this percents and mixture problems worksheet, students solve 18 different problems that include mixture problems. First, they determine the sum of a number, times its reciprocal. Then, students determine the sum of a number minus its...
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Mixtures
Young scholars observe that movement of a solute in the solvent increases the rate of dissolution. They demonstrate that when the solute is broken into smaller pieces it dissolves faster.
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Up and Atom
"Up and Atom" is a mini-unit introducing middle-schoolers to the wonders of elements. Participants draw atom models, examine the periodic table, compare samples of metals to nonmetals, identify unknown elements, and more! The beginning...
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Sample Midyear Examination (Chemistry and Biology)
A 12-page midterm exam sample can be given to young scientists in preparation for an exam. This particular installment is geared toward a class that delves into both ecology and chemistry concepts. There is no way to separate the 50...
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Chemical Ideas 7.6 - Chromatography
Thin-layer and gas-liquid chromatography are introduced in an intelligible presentation. Paper chromatography is also listed as another type of chromatography, but it is not explained. If you are particular about appearances, there are...
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Matter Overview
There is not much information in this presentation. It serves more as a guide to direct the flow of your introductory chemistry lecture. Each slide displays a large title and a smaller phrase meant to explain it. For example, one title...
Illustrative Mathematics
Quinoa Pasta 1
Here is a great opportunity to introduce your mathematicians to a food they may never have heard of, quinoa. It may help to show a short video on quinoa, or make some quinoa for the class to try. Once they get over how to say quinoa,...
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Chromatographic Separation of Methylene Blue and Sodium Fluorescein
Students determine the best solvent system for separating a methylene blue/sodium fluorescein mixture by thin layer chromatography. They conduct an initial TLC separation using ethanol and a different solvent mixture and analyze the data...
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