1 – 25 of 54 Classroom Resources

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  Identifying an Unknown, Solutions, Solubility, States of Matter, Melting Point, Phase Changes, Acids & Bases, pH, Strong vs Weak, Observations, Molecular Motion | High School

  Activity: Simulation Activity: Identifying Unknowns with Safety Data Sheets Mark as Favorite (6 Favorites)

  In this activity, students will use a simulation to learn about some of the sections of a safety data sheet (SDS) and how the information on SDSs can be used not only for safety purposes but also for identifying unknowns. Specifically, students will use “Section 9: Physical and Chemical Properties” to distinguish between two or three substances with similar appearances in a variety of lab-based scenarios. Particle diagrams are also included to help students visualize the substances’ behavior on a particulate level.

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  Identifying an Unknown, Solutions, Solubility, States of Matter, Melting Point, Phase Changes | High School

  Simulation: Safety Data Sheets Mark as Favorite (6 Favorites)

  Students learn about sections of a safety data sheet (SDS) and how the information can be used for safety purposes and for identifying unknowns. They will use the Physical and Chemical Properties section and particle diagrams to distinguish between substances with similar appearances in a variety of lab-based scenarios.

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  Chemical Change, History, Identifying an Unknown, Molecular Structure | High School

  Lesson Plan: Development of Diagnostic Test Strips Mark as Favorite (4 Favorites)

  In this lesson, students will learn about diagnostic test strips by reading an article and engaging in related activities. The activities help promote literacy in the science classroom. Parts of this lesson could be used as plans for a substitute teacher.

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  Separating Mixtures, Identifying an Unknown, Polarity, Intermolecular Forces, Molecular Structure | High School

  Lesson Plan: What Chemicals are in E-Cigarettes? Mark as Favorite (13 Favorites)

  In this lesson, students will learn about gas chromatography by comparing it to paper chromatography. Students will analyze gas chromatography data to learn more about the chemicals present in e-cigarettes. Finally, students will take the knowledge they learned to create an infographic. Students will post their infographic publicly to make a positive impact in their community.

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  Separating Mixtures, Identifying an Unknown, Functional Groups, Molecular Structure | High School

  Lesson Plan: Gas Chromatography-Mass Spectrometry Mark as Favorite (4 Favorites)

  In this lesson, students will learn about the development of Gas Chromatography-Mass Spectrometry (GC-MS) and how it used today. There are a series of activities to help promote literacy in the science classroom related to the reading. Through these activities students will learn how to interpret a skeletal structure, as well as the names and structures of several organic functional groups. Additionally, they will examine and evaluate a mass spectrum. This lesson could be easily used as plans for a substitute teacher, as most of the activities are self-guided.

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  Physical Properties, Physical Change, Observations, Identifying an Unknown, Lab Safety, Covalent Bonding, Ionic Bonding, Intermolecular Forces, Molecular Motion | High School

  Animation: Physical Properties and Particle Interaction Animation Mark as Favorite (16 Favorites)

  This animation explores the relationship between physical properties and particle-level interactions. Particle diagrams of common household substances are used to illustrate that forces of attraction influence melting points. Similarly, particle diagrams of the same substances dissolved in water are used to compare their conductivity in solution. This animation was featured in the November 2023 issue of Chemistry Solutions. **This video has no audio**

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  Physical Properties, Physical Change, Observations, Identifying an Unknown, Lab Safety, Molecules & Bonding, Covalent Bonding, Ionic Bonding, Intermolecular Forces, Molecular Motion, Solutions, Conductivity, States of Matter, Melting Point, Intermolecular Forces, Molecular Motion | High School

  Activity: Animation Activity: Physical Properties and Particle Interaction Mark as Favorite (10 Favorites)

  In this activity, students will view an animation that explores the relationship between physical properties and particle-level interactions. Particle diagrams of common household substances are used to illustrate that forces of attraction influence melting points. Similarly, particle diagrams of the same substances dissolved in water are used to compare their conductivity in solution.

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  History, Observations, Identifying an Unknown, Molecular Structure , Functional Groups | High School

  Lesson Plan: Introduction to Flavor Chemistry Mark as Favorite (13 Favorites)

  In this lesson, students will read an article about flavor chemistry to learn about the science of tasting. There are a series of activities to help promote literacy in the science classroom related to the reading and help students experience what they’ve read about. One part, the Job Interview, could be used as plans for a substitute teacher since the activity is self-guided.

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  Identifying an Unknown, Chemical Properties, Solute & Solvent, Mixtures | Middle School, High School

  Lab: Local Water Analysis Mark as Favorite (19 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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  Elements, History, Chemical Properties, Physical Properties, Identifying an Unknown, Ionic Bonding, Naming Compounds | High School

  Lesson Plan: Joseph Priestley, Discoverer of Oxygen Mark as Favorite (12 Favorites)

  In this lesson, students will read an article to learn about the discovery and identification of gases, specifically oxygen by Joseph Priestley. There are a series of activities to help promote literacy in the science classroom related to the reading. This lesson could be easily used as plans for a substitute teacher, as most of the activities are self-guided.

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  Identifying an Unknown, Observations, Physical Change, Physical Properties, Chemical Change, Chemical Properties, Solubility, Precipitate, Indicators | High School

  Lab: Using Qualitative Analysis to Identify Household Compounds Mark as Favorite (56 Favorites)

  In this lab, students will be introduced to common laboratory techniques, safety procedures, lab reagents, and terminology, all while identifying unknown household substances. Students will learn how to use qualitative analysis techniques as a systematic way to identify unknown materials. As part of this process, they will practice careful observation and documentation, as well as identifying relevant physical and chemical properties and changes, including solubility, color change, gas formation, and precipitation of solids.

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  Emission Spectrum, Atomic Spectra, Electrons, Atomic Theory, Emission Spectrum, Electromagnetic Spectrum, Identifying an Unknown | High School

  Lab: Emissions of Light Mark as Favorite (34 Favorites)

  In this lab, students will examine three different ways to excite electrons to produce visible light found in the electromagnetic spectrum. The students will then see that this visible light has a specific color, wavelength, and frequency. They will use their knowledge of the speed of light and plank's equation to examine the energy involved in the emission of light. Finally, the students will then apply their knowledge of the emission spectrum to how the composition of stars is determined.

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  Identifying an Unknown, Experimental Design, Scientific Method, Chemical Change, Net Ionic Equation, Precipitate, Solubility, Solubility Rules, Balancing Equations, Predicting Products, Chemical Change | High School

  Lab: Mislabeled Mess! Mark as Favorite (28 Favorites)

  In this lab, students will identify 3 unknown acids by using the solubility rules. They will be given a list of materials and will design their own procedures for identifying the unknowns. For each combination of reactants, they will predict whether a product forms and, if it does, write complete and net ionic equations for those reactions.

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  pH, Indicators, Chemical Properties, Physical Properties, Identifying an Unknown | High School

  Lab: Pigment pH Puzzles Mark as Favorite (19 Favorites)

  In this lab, students will use their scientific detective skills to determine the identity of pigments used in various types of pH test strips based on how they each interact with several solutions of different pH values.

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  Identifying an Unknown, Experimental Design, Chemical Properties, Physical Properties, Observations, Polyatomic Ions, Chemical Change, Ionic Bonding, Covalent Bonding, Solubility | High School

  Lab: Determining the Composition of Bridge Straw Stalactites Mark as Favorite (8 Favorites)

  In this lab, students will investigate “straws” that hang from a local bridge, and then determine various tests that can help to determine their chemical composition. Evaluating both the test results, as well as given information students will then make a claim about the composition, while providing evidence and supporting it with reasoning.

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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 (47 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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  Molecular Structure, Lab Safety, Identifying an Unknown, Interdisciplinary | High School

  Lesson Plan: How Modern Instrumentation Revolutionized the Poison Game Mark as Favorite (46 Favorites)

  In this lesson, students are introduced to the world of Forensic Chemistry using the prologue of Deborah Blum’s The Poisoner’s Handbook. Discussion revolves around why murder by poison was so prevalent during the nineteenth and early twentieth centuries, and why it is so rare today.  Students create their own Safety Data Sheet on a poison of choice, and learn about how mass spectroscopy has helped revolutionize the modern analysis of toxins. 

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  Titrations, Acid Base Reactions, Identifying an Unknown, Molarity | High School

  Lesson Plan: Investigating a Suspicious Drowning with Titrations Mark as Favorite (48 Favorites)

  In this lesson, students take on the role of a forensic chemist who is tasked with investigating a suspicious drowning incident. Students will conduct a series of titrations on an evidence sample of water collected from the victim's lungs as well as on several water samples from local water sources (lakes, rivers, wells, etc.) Based on their findings, they will determine where the victim actually drowned.

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  Density, Identifying an Unknown, Physical Properties | Middle School, High School

  Lesson Plan: The Shattered Glass Mystery Mark as Favorite (20 Favorites)

  In this lesson, students will take on the role of a Forensic Scientist to help solve a hit and run investigation. They will learn how physical properties of matter, such as density and refractive index, can be used to help identify evidence samples such as glass.

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  Measurements, Error Analysis, Scientific Notation, Density, Identifying an Unknown | Middle School

  Lab: A Chemistry Calculation Challenge Mark as Favorite (7 Favorites)

  Students will apply their knowledge to solve four challenging chemistry-based calculation problems involving mass, volume, density, and number of molecules.

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  Electromagnetic Spectrum, Identifying an Unknown | Middle School, High School

  Activity: Color Matching Paint Video Questions Mark as Favorite (4 Favorites)

  In this activity, students will watch a video and answer related questions about how technology, specifically focusing on spectrophotometry, can be used for paint matching. During the video, students will learn how the spectrophotometer interacts with the spectrum of visible light in order to match or reproduce specific paint colors.

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  Balancing Equations, Classification of Reactions, Chemical Change, Identifying an Unknown, Molarity, Concentration | High School

  Lab: An Environmental Impact Study Mark as Favorite (75 Favorites)

  In this lab, students will test a water sample which comes from a local zoo, where, it is reported that many bird eggs are not hatching. Students will test the water for the presence of multiple ions. Once the type of ion in the water is determined, students will write balanced equations to illustrate their findings. Students will also conduct a serial dilution to determine the concentration, or molarity, of the ion in the water sample. This molarity will be compared to known values to determine if the materials in the water are at an unhealthy level.

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  Density, Identifying an Unknown, Measurements | Elementary School, Middle School

  Demonstration: Household Densities Mark as Favorite (6 Favorites)

  In this demonstration, students will make predictions about various household materials and whether or not each will sink or float when placed in water. Data will be collected and then used to calculate the density value of each item. Finally students will analyze the relationship between the density value and the observed outcome, and use their knowledge to identify unknown materials.

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  Elements, Identifying an Unknown, Atomic Spectra, Emission Spectrum, Electromagnetic Spectrum, Emission Spectrum | Elementary School, Middle School

  Lesson Plan: Elements Are Out of This World Mark as Favorite (6 Favorites)

  In this lesson, students will learn about the elements that make up Earth’s atmosphere and lithosphere and then compare and contrast the information with the elements that compose various other astronomical objects.

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  Percent Composition, Mole Concept, Identifying an Unknown, Emission Spectrum, Empirical Formula, Percent Composition | High School

  Lesson Plan: Chemical Analysis of Martian Rocks Mark as Favorite (104 Favorites)

  In this lesson, students are challenged to analyze the spectral graphs obtained by the Curiosity Mars Rover. Based on their examination students will determine the component elements of each sample, as well as the relative abundance of each element. With this information the student will complete calculations to find the empirical formula and identify the composition of the unknown rock. Finally students will complete research to see if these rocks are actually like those on Earth.