Curated OER
Exploring the Scientific Method: Separation of a Complex Mixture
Students work in teams to use the scientific method to separate complex mixtures into pure components.
Curated OER
Working with Solutions
In this solutions worksheet, students review how molarity is calculated and how to prepare a dilute solution. This worksheet has 5 problems to solve.
Illustrative Mathematics
Cooking with the Whole Cup
Whoops! Travis accidentally put too much butter into the recipe. Your bakers must find out how to alter the recipe to accommodate different changes by using unit rates and ratios . The activity has multiple parts and calculations with...
Royal Society of Chemistry
Some Reactions of Carbon Dioxide—Microscale Chemistry
Precipitation reactions are always interesting. How about one that forms a precipitate using a gas? Chemists of any age will enjoy this twist on a standard solubility lab. Partners observe the lack of interaction between sodium hydroxide...
Curated OER
Quinoa Pasta 3
A mixture of quinoa and corn is for dinner in this collaborative task that sets up nicely as a system of linear equations. Your supper guests discuss numerical precision and percentages as they formulate a plan of how to solve the problem.
Curated OER
A Picture is Worth a Thousand Words
In this thousands word problems worksheet, 7th graders solve and complete 6 different word problems that include the thousands place. First, they read each story and draw a picture to determine the solutions to each problem. Then,...
Curated OER
Goofy Putty
Learners examine mixtures and solution properties by making a borax polymer. In this chemical reactions lesson, students make a putty out of borax solution mixed to create a polymer.
Curated OER
What Properties Do Solutions Have?
In this solutions worksheet, students will write down two properties that solutions have and then will come up with a conclusion about solutions based on their facts.
Cornell University
Unknown Powders
Create a little scientific magic within your classroom! Learners mix powders and liquids and identify chemical reactions. Based on the reactions, individuals determine the identity of various powders.
Curated OER
Quinoa Pasta 2
Learners discover that a system of linear equations models this mixture of quinoa and corn in a collaborative task. Your learners receive all the relevant information in this second of three variants of tasks that ask them to find the...
Concord Consortium
Protein Folding
Long strings of amino acids fold themselves into stable peptides. The simulation allows scholars to observe the process in multiple ways. Using hydrophobic, hydrophilic, or a combination of proteins in three different solutions, the...
Beyond Benign
Urine Jeopardy
Urine can tell us a lot about what is happening in our bodies. In a hands-on activity, scholars administer pH, glucose, ketone, and protein tests to a sample of "urine" solution made from household ingredients. Their results lead them to...
Curated OER
Solubility
In this solubility worksheet, students 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.
Curated OER
The Separation Problem
In this mixture separation instructional activity learners 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...
Curated OER
Classification of Changes
In this classification of changes worksheet, students identify each example as either chemical or physical changes. Students also classify other examples as either element, compound, solution, colloid, or suspensions. In the other...
Curated OER
Solids and Water
Students 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...
Curated OER
Water Unit
In this water worksheet, students review the properties of water including the density, boiling point, and evaporation. Students define mixture, solute, and solvent. This worksheet has 22 short answer questions.
Curated OER
Lip Balm Chemistry
Students explore density, mixture and solutions in a reaction. In this chemistry lesson, students create their own chap-stick using ingredients they analyze for their chemical contents. They discuss measuring skills, melting points and...
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,...
Curated OER
Solutions
In this solutions worksheet, students determine the pH or molar solubility of different solutions. Students state is the mixture given forms a buffer. This worksheet has 20 problems to solve.
Curated OER
It's a Mixed Up World!
Middle schoolers examine the importance of applying the scientific knowledge of elements, mixtures, and compounds to manufacture consumer goods and conduct civil operations, such as water purification. They also practice categorizing...
Curated OER
Mixtures
In this mixtures pre-lab worksheet, learners compare and contrast suspensions and colloids and solutions and colloids. Students describe the Tyndall effect. This worksheet has 10 short answer questions.
Cornell University
Nano Interactions
Tiny particles can provide big learning opportunities! Middle school scientists explore the world of nanoparticles through reading, discussion, and experiment. Collaborative groups first apply nanotechnology to determine water hardness....
Curated OER
Parts-Per-Million Concentration Lab
Students develop a comprehension of parts per million as a concept. They work in teams to create successive dilutions of a solution to reach a parts-per-million concentration. Students list what they think the atmosphere is made of. They...
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