Classroom Resources: Solutions
26 – 50 of 52 Classroom Resources
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Solubility, Solubility Rules, Solute & Solvent, Intermolecular Forces, Chemical Bond, Ionic Bonding, Covalent Bonding, Polarity, Intermolecular Forces, Intramolecular Forces | Middle School, High School
Activity: Animation Activity: Solubility Mark as Favorite (27 Favorites)
In this activity, students will view an animation that explores how ionic and molecular compounds dissolve (or don’t) in water. They will see that if an ionic compound such as salt dissolves, the ions dissociate, whereas the molecules in a molecular compound such as sugar remain intact but are separated from one another by water molecules. They will also see that some ionic compounds such as chalk do not dissolve, and the cations and anions remain stuck together.
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Solubility, Observations | Elementary School, Middle School
Activity: Paper Flower Blossoms Mark as Favorite (3 Favorites)
In this activity, students will investigate solubility by using a combination of washable markers and permanent ink to color a paper flower. The petals of the flower will be folded, and then placed in a shallow dish of water. Students will be intrigued by the outcome as they observe several changes occur. Using their knowledge of several fundamental chemistry topics, student will explain their observations using evidence and modeling.
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Mixtures, Physical Properties, Molecular Structure, Mixtures | Elementary School, Middle School, High School
Demonstration: Analyzing Mixtures Mark as Favorite (36 Favorites)
In this demonstration, the teacher will create a sequence of mixtures in a single test tube. Water, oil, food coloring and soap will be used in this demonstration to introduce the concepts of heterogeneous and homogeneous solutions as well as the idea of miscibility. Students will also have the opportunity to analyze the properties, such as surface tension of each component used.
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Observations, Physical Properties, Solubility, Ionic Bonding | High School, Middle School
Lab: Microscopic Wonder Mark as Favorite (25 Favorites)
In this lab, students observe and describe the shape, size, and arrangement of salt crystals at various magnifications under a microscope and then compare the properties of each microscopically.
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Chemical Change, Strong vs Weak, Salts, Acid & Base Theories, Ions, Conductivity, Mixtures | Middle School
Lesson Plan: Why Drink Gatorade? Mark as Favorite (2 Favorites)
In this lesson, students will test different flavors of Gatorade and other liquids to investigate acids and bases. This will take several days unless students already know about acids and bases.
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Precipitate, Chemistry Basics, Reactions & Stoichiometry, Solubility Rules, Balancing Equations, Chemical Change, Chemical Change | High School, Middle School
Lab: Predicting Precipitates Mark as Favorite (30 Favorites)
In this lab, students use solubility rules to predict which chemical reactions will produce precipitates.
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Ionic Bonding, Naming Compounds, Precipitate, Ions, Molecular Formula | Middle School
Activity: Bond with a Classmate Mark as Favorite (38 Favorites)
In this activity, students are assigned an ion and form bonds with their classmates, recording the formula and name of the compound they created.
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Solute & Solvent, Physical Change, Solubility | Middle School, High School
Lab: Chemistree Mark as Favorite (18 Favorites)
In this lab, students will prepare a solution to observe a physical change.
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Identifying an Unknown, Chemical Properties, Solute & Solvent, Mixtures | Middle School, High School
Lab: Local Water Analysis Mark as Favorite (23 Favorites)
In this lab, students use simple pool test strips to collect water samples from local water sources, such as area faucets, pools, lakes, rivers, puddles, etc. They will compile all of the collected data to allow students to collectively make observations and ask testable questions. After determining a question of interest, groups of students will organize the related data, research relevant background information, form reasonable conclusions, and present their arguments.
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Colligative Properties, Boiling Point Elevation, Freezing Point Depression, Concentration, Solute & Solvent, Boiling Point, Freezing Point, Phase Changes, Molecular Motion, Graphing, Physical Properties, Heat, Temperature | Middle School, High School
Activity: Simulation Activity: The Effect of Solutes on Boiling and Freezing Point Mark as Favorite (43 Favorites)
In this activity, students will use a colligative properties simulation to investigate the effects of different solutes, and different amounts of those solutes, on the boiling point and freezing point of a solution. Students will see particle-level animations of boiling and freezing with different types and amounts of solutes, as well as graphical representations of the results of each trial.
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Electromagnetic Spectrum, Molecular Structure, Mixtures | Middle School, High School
Video: What are Pigments? Video Mark as Favorite (14 Favorites)
This video discusses the chemistry of pigment molecules and how they are used to give paints their specific color. Students will learn about the importance of a pigment’s molecular structure, how they are physically suspended to create a paint color, as well as how they interact with light.
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Freezing Point Depression, Heat, Phase Changes, Molecular Motion | Middle School, High School
Lab: Sweet, Salty and Cold as Ice Mark as Favorite (33 Favorites)
In this lab, students conduct a micro-scale investigation to explore how various solutes affect the freezing point of water. Because of the small volume of liquid used, results are visible within minutes. Students observe what happens to the liquids as they are cooled and use their observations to infer what is going on at the particle level. They will use the results to explain the familiar phenomena of why we salt our roads and sidewalks in the winter and why freshwater lakes and ponds freeze over more easily than saltwater oceans in the winter.
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Concentration, Percent Composition | Middle School, High School
Lab: Homemade Hydrometers Mark as Favorite (5 Favorites)
In this lesson, students will engineer simple hydrometers from straws and clay to learn about standard solutions, calibration, and instrument drift. They will use their hydrometers to test the salinity of samples of natural water.
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Solubility, Solute & Solvent, Precipitate, Mixtures, Error Analysis, Chemical Change, Physical Change, Observations, Identifying an Unknown, Graphing | Middle School, High School
Lab: Chemicals, Chromatography, and Crime! Mark as Favorite (52 Favorites)
In this lab, students will test “evidence” that has been collected from a crime scene. In order to determine if the victim was poisoned, students will perform a solubility and crystallization test on an unknown powder. Then, students will attempt to identify the culprit by using paper chromatography to analyze the lipstick from the potential criminals.
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Mixtures, Acid Rain, Interdisciplinary, Chemical Properties | Elementary School, Middle School
Lesson Plan: Environmental Problems Mark as Favorite (13 Favorites)
In this lesson, students are presented with an environmental problem to solve using important concepts of chemistry, which involves a lake with deteriorating water quality.
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Solute & Solvent, Chemical Change, Solubility, Chemical Bond | Middle School
Lab: A Sticky Situation Mark as Favorite (6 Favorites)
In this lab, students will try to separate plastic spoons that have been attached together with different adhesive materials using a variety of solvents.
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Polarity, Intermolecular Forces, Intermolecular Forces, Physical Change, Matter | Middle School
Lesson Plan: Sandy Beaches—A Foray into ‘Magic’ Sand Mark as Favorite (6 Favorites)
In this lesson, students will investigate the properties of magic sand and learn about the concept of hydrophobic and hydrophilic molecules. It also introduced students to the field of nanotechnology.
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Observations, Physical Properties, Chemical Properties, Mixtures | Elementary School, Middle School
Lesson Plan: Clean-Up Pond Pollution Mark as Favorite (3 Favorites)
In this lesson, students will compare polluted and filtered water to observe how filtering can remove some kinds of pollutants. Students will also be asked to consider how people affect ecosystems and use the scientific method to conduct an experiment on polluted water.
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Mixtures, Solute & Solvent, Intermolecular Forces, Intermolecular Forces, Molecular Formula, Molecular Structure, Polymers, Electromagnetic Spectrum | Middle School, High School
Video: What is Paint? Video Mark as Favorite (17 Favorites)
This video investigates the composition of paint, while analyzing the fundamental chemistry principles of its main components. Students will learn about the differences between three common paint types, water colors, oil-based and acrylic paint as well as the chemistry of each.
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Solute & Solvent, Intermolecular Forces, Solubility | Middle School, High School
Activity: Basic Modeling of the Dissolving Phenomenon Mark as Favorite (54 Favorites)
In this activity, students explore the process of salt dissolving in water using cut-outs of ions and water molecules to model interactions between them. They then use their model to make a prediction about the relative solubility of salt in isopropyl alcohol compared to the solubility in water and design an experiment to test their prediction.
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Solubility, Solute & Solvent, Intermolecular Forces | Middle School, High School
Activity: Advanced Modeling of the Dissolving Phenomenon Mark as Favorite (29 Favorites)
In this activity students build a model of sodium chloride based on their own knowledge of ionic compounds. Then they construct a model of the interactions between water and their salt model to develop an understanding of what caused the salt to dissolve. After refining their models based upon class discussions and critiques, students then construct a model of the interaction between salt and a different solvent, alcohol. Using their models, students make predictions as to which solvent (water or alcohol) would be better at dissolving the salt. Finally students design an experiment to test their prediction. As an extension, students are asked to use their solubility models to explain why calcium carbonate will not dissolve in water, even though it is also an ionic compound.
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Solubility, Solute & Solvent, Precipitate, Saturated/Unsaturated/Supersaturated | High School, Elementary School, Middle School
Lab: Winter Crystals Mark as Favorite (48 Favorites)
In this lab, students will create a supersaturated solution by dissolving borax in boiling water. They will create a snowflake using pipe cleaner to suspend in the solution, which will serve as a nucleation site for crystallization as the solution cools and remains undistributed overnight. This lab gives students an opportunity to experience the exciting crystallization process and become more familiar with an engaging chemistry spectacle!
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Density, Observations, Inferences, Mixtures, Mixtures | Middle School, High School
Demonstration: Density Tubes Mark as Favorite (3 Favorites)
In this demonstration, students will have the opportunity to observe and analyze the density of a solution. Students will interpret their observations as they compare the density of the solution with plastic components.
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Polarity, Polymers, Molecular Structure, Monomer, Intermolecular Forces, Scientific Method, Chemical Change, Intermolecular Forces | Middle School
Lesson Plan: Watch the Baby! Superabsorbent Polymer Mark as Favorite (6 Favorites)
In this lesson, students will learn about how polymers, specifically superabsorbent polymers, work. Through lab activities, students will investigate polymer properties.
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Separating Mixtures, Physical Properties, Mixtures, Solute & Solvent | Elementary School, Middle School
Lab: What Does Ironman Eat for Breakfast? Mark as Favorite (12 Favorites)
In this lab students will compare and contrast mixtures and solutions. They will be tasked with extracting iron from various breakfast cereals. They will then conclude which cereal would be the healthiest for Iron Man to eat for breakfast.