276 – 300 of 308 Classroom Resources

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  Observations, Combustion, Phase Changes, Experimental Design, Scientific Method | High School, Middle School

  Lab: Observing a Candle Mark as Favorite (16 Favorites)

  In this lab, students accumulate observations of a candle including a look at the combustion reaction's reactants and products.

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  Density, Dimensional Analysis, Review, Measurements, Accuracy, Accuracy, Experimental Design, Error Analysis | High School, Middle School

  Lab: Bowling Ball—Will it Sink or Float in Water? Mark as Favorite (7 Favorites)

  In this lab, students will find the density of a bowling ball to determine whether it will sink or float in water.

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  Significant Figures, Measurements, Accuracy, Density, Accuracy, Error Analysis, Error Analysis | Middle School, High School

  Lab: Significant Figures and Lab Data Mark as Favorite (98 Favorites)

  In this lesson, students will use laboratory equipment of different precision to collect data for several different metals, and then use the data to calculate the density of each. They will then compare their calculated densities to accepted values and determine the combination of equipment that leads to the most accurate calculation of density.

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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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  Conservation of Mass, Exothermic & Endothermic, Chemical Change, Heat, Temperature, Observations, Chemical Change | High School, Middle School

  Lab: Kitchen Reaction Mark as Favorite (18 Favorites)

  In this lab students will observe an endothermic chemical reaction involving baking soda (sodium bicarbonate) and vinegar (acetic acid). Students will investigate the signs a chemical reaction has occurred (gas production, change in temperature). Students will perform the lab in an open system so they can see the change of mass due to gas production. This lab is a lead into the topic of conservation of mass. After the lab is completed, the teacher should do a demonstration of the exothermic reaction Hydrogen peroxide and potassium iodide.

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  Density, Density, Observations, Inferences | High School, Middle School

  Demonstration: Qualitative Look at Gas Density Mark as Favorite (6 Favorites)

  In this demo, students witness three types of gases and observe their relative densities to air.

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  Physical Change, Mixtures, Observations | High School, Middle School

  Activity: Magic Bubble Mark as Favorite (7 Favorites)

  In this lesson, students will create and interpret particle diagrams that represent elements and compounds at the molecular level. They will also describe the process of dissolving and create particle diagrams that represent mixtures at the molecular level.

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  Reaction Rate, Experimental Design, Scientific Method, Observations, Chemical Change | High School, Middle School

  Lab: Reaction Rate Mark as Favorite (25 Favorites)

  In this lab, students will explore factors that effect reaction rate and develop a general statement that describes how the factors (temperature, particle size, and concentration) effect the rate based on experimental data. This is an inquiry-based activity.

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  Model of the Atom, Periodic Table, Subatomic Particles, Electrons, Valence Electrons, Ions | High School, Middle School

  Lab: Sweet Model of the Atom Mark as Favorite (63 Favorites)

  In this lesson, students will use different candies to represent electrons, protons, and neutrons to gain a better understanding of atoms, ions, and isotopes.

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  Phase Changes, Sublimation, Physical Change, Density, Observations, Temperature | Middle School

  Lesson Plan: Dry Ice Mark as Favorite (0 Favorites)

  In this lesson, students will investigate how dry ice undergoes a phase change from solid to gas, skipping the liquid phase under normal temperature and pressure.

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  Conservation of Mass, Chemical Change, Chemical Change, Observations | High School, Middle School

  Lab: Conservation of Mass Mark as Favorite (6 Favorites)

  In this lab, students perform three simple experiments, recording the mass of a substance before and after a reaction. They then explain how the law of conservation of mass was not violated, even if the mass changed.

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  Periodic Table, History | Elementary School, Middle School, High School

  Video: Manganese Video Mark as Favorite (5 Favorites)

  In this video, Sam Kean tells stories about manganese.

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  Chemical Change, Classification of Reactions, Oxidation, Reduction, Redox Reaction, Electrons, Electron Transfer, Observations, Inferences, Chemical Change | Middle School

  Lesson Plan: One Tube Reaction Mark as Favorite (5 Favorites)

  In this lesson, students will observe a chemical change involving oxidation and reduction.

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  Lab Safety | Elementary School, Middle School, High School

  Video: Video 1: Safety Mindset Mark as Favorite (49 Favorites)

  The chemistry lab is an amazing place! Through experiments and demonstrations your high school students have been discovering that chemistry is more than just a collection of facts and formulas-- it’s a way of observing and understanding the very real properties of matter all around them. However, the lab can also be a dangerous place. Contrary to what your students might have seen in films and TV, safety is a core value of chemistry—it is essential to everything they do in the lab. It begins with their mindset, the attitudes and beliefs they bring to class with them every day. Use this video to introduce your students to elements of safe importance of safety mindset in the chemistry lab.

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  Lab Safety | Elementary School, Middle School, High School

  Video: Video 2: Safety Data Sheet (SDS) Mark as Favorite (12 Favorites)

  Preparation and planning are key to working in the chemistry lab. To be prepared, your students must understand the hazards of any chemicals they will be working with. The place to find that information is the Safety Data Sheet or SDS. The SDS provides detailed information about the properties of a chemical, its hazards, and how to protect yourself from those hazards. Use this video, to guide your students through 16 sections of the SDS for isopropyl alcohol to demonstrate importance of SDS information.

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  Lab Safety | Elementary School, Middle School, High School

  Video: Video 3: How to Dress for the Lab? And what about Personal Protective Equipment (PPE)? Mark as Favorite (13 Favorites)

  Wearing personal protective equipment (PPE) for short is one of the main ways for you and your students to stay protected from injury in the lab. PPE includes things like goggles, gloves, lab coats or aprons. These are designed to protect eyes, hands and skin, as well as clothing, from exposure to chemicals. PPE is the most obvious way of preventing contact with chemicals--but it is not the first line of defense. Use these video to teach your students that before they put on any PPE, why they should dress properly for lab.

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  Lab Safety | Elementary School, Middle School, High School

  Video: Video 4: Preparing for Emergencies Mark as Favorite (11 Favorites)

  There is an old saying that you should always plan for the best, but prepare for the worst. This is good advice in the lab as well. Use this video to teach your students about two lab emergencies that carry a high risk of injury--spills and fires. The videos describes concrete steps to prevent these emergencies and goes over some of the safety equipment used to deal with them.

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  Scientific Method, Observations | Middle School

  Lab: Which Paint is the most Cost-Effective Mark as Favorite (1 Favorite)

  In this lab, students will practice implementing the scientific method in order compare the properties of different paint samples through a variety of testing. Students will research consumer reports, hypothesize, and conduct specific tests in order to determine which brand of paint is the most cost effective.

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  Balancing Equations, Chemical Change, Observations | High School, Middle School

  Lab: Chemical Reactions & Equations Mark as Favorite (48 Favorites)

  In this lesson, students will observe a series of reactions, make observations, and then write balanced chemical equations to chemically describe what they observed.

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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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  Sublimation, Density, Observations | High School, Middle School

  Lab: Dry Ice (High School) Mark as Favorite (30 Favorites)

  In this lab, students perform several small experiments using dry ice and record their observations.

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  Freezing Point, Melting Point, Phase Changes, Acids & Bases, Physical Change | Middle School

  Lesson Plan: Stearic Acid Mark as Favorite (2 Favorites)

  In this lesson, students investigate how stearic acid undergoes a phase change from solid to liquid and back from liquid to solid. Temperature readings will be collected at one-minute intervals once the acid melts, the heat escapes, and the acid cools. Students are introduced to the idea that energy loss does not always result in a continuous temperature drop.

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  Photosynthesis, Conservation of Mass, Balancing Equations, Chemical Change, Reversible Reactions, Molecular Formula, Interdisciplinary, Chemical Change, Conservation of Mass | Middle School

  Lesson Plan: The Building Blocks of Photosynthesis Mark as Favorite (3 Favorites)

  In this lesson, students will use colored blocks to represent the elements in photosynthesis and illustrate how they are broken down and reassembled to create glucose.

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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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  Molecular Structure, Interdisciplinary, Scientific Method | Middle School

  Lesson Plan: The Effect of Different Foods on Mealworms Mark as Favorite (1 Favorite)

  In this lesson, students will look at the chemistry of the molecules of carbohydrates, fats, and lipids, and they will use this information to determine a diet for their mealworm and will collect information about the mealworm to test a hypothesis.