# Classroom Resources: Solutions

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1 – 12 of 12 Classroom Resources

• Solubility, Solute & Solvent, Intermolecular Forces | High School, Middle School

### Activity: Basic Modeling of the Dissolving Phenomenon

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.

• Solubility, Solute & Solvent, Intermolecular Forces | High School, Middle School

### Activity: Advanced Modeling of the Dissolving Phenomenon

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.

• Observations, Physical Properties, Mixtures, Solute & Solvent, Mixture | Middle School

### Lesson Plan: How Fast Does it Flow?

In this lesson students explore the viscosity of different mixtures. They measure viscosity of different mixtures and then have the opportunity to design a mixture to attain a particular viscosity. Students will relate their lab experience to the application of viscosity in the real-world as they consider the differences in viscosity between different types of paints.

• Separating Mixtures, Physical Properties, Mixtures, Solute & Solvent | Middle School, Elementary School

### Lab: What Does Ironman Eat for Breakfast?

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.

• Mixtures, Intermolecular Forces, Molecular Formula, Polymers, Molecular Structure, Solute & Solvent, Intermolecular Forces, Electromagnetic Spectrum | High School, Middle School

### Video: What is Paint? Video

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.

• Concentration, Solute & Solvent, Chemical Change | Middle School, Elementary School

### Demonstration: Soft Eggs

In this demonstration, students will first observe a reaction between vinegar (acetic acid) and an egg shell (calcium carbonate) to produce a naked egg. Using these eggs, student will analyze how certain substances can move through a membrane and also determine if the membrane is affected.

• Solubility, Solute & Solvent | High School, Middle School

### Lab: What's the Solution?

In this lab students will choose one factor that can affect the rate at which a solute will dissolve into solution –amount of stirring, temperature, or particle size, and will design a procedure that can be used to determine how it will affect rate of solution. Students will identify one of the factors above as the independent variable and will determine how it affects the solubility rate as supported by time required to dissolve the solute.

• Mixtures, Solubility, Intermolecular Forces, Polarity, Solute & Solvent, Intermolecular Forces, Molecular Geometry | High School, Middle School, Elementary School

### Animation: Solubility Animation

In an animation, students will have an opportunity to visualize on the particulate level how solubility works. Examples of ionic compounds and a polar covalent compound show how when water is attracted to charged parts, they dissolve, and when they're not attracted to charged parts they stay solid. **This video has no audio**

• Solubility, Precipitate, Solute & Solvent | Middle School, Elementary School, High School

### Lab: Winter Crystals

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!

• Mixtures, Solubility, Percent Composition, Concentration, Solute & Solvent | Middle School

### Lab: The Perfect Kool-Aid Concentration

In this lab, the students will investigate how the concentration of a solution affects its properties such as color and taste.

• Solubility, Chemical Change, Solute & Solvent, Chemical Bond | Middle School

### Lab: A Sticky Situation

In this lab, students will try to separate plastic spoons that have been attached together with different adhesive materials using a variety of solvents.

• Solubility, Physical Change, Solute & Solvent | High School, Middle School

### Lab: Chemistree

In this lab, students will prepare a solution to observe a physical change.

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Subtopic: Solute & Solvent