Curated OER
Acid and Bases - Alien II
Eighth graders determine which of two solutions is more acidic by adding each to a given base. Students have to apply this analysis process to a problem scenario involving an alien creature.
Science Bob Pflugfelder
Science Bob: A Density Experiment You Can Drink
Science Bob provides instructions for a density experiment you can drink using common supplies with information on how it works.
Museum of Science
Museum of Science: Water Density Experiment
A simple lab activity to demonstrate that ocean currents are influenced by changes in water density.
Woods Hole Oceanographic Institution
Woods Hole Oceanography Institute: Activity: Demo for Density
In this experiment, students look at Deep Hypersaline Anoxic Basins, or DHABs, that are present in the Eastern Mediterranean, and make a model of a DHAB to investigate how liquids that have different densities can form layers. This...
Science Education Resource Center at Carleton College
Serc: Is All Ice Created Equal? A Density Lab
A lab experiment that shows students that different molecules melt in different ways. This lab also allows students to practice calculating and finding density, mass, and volume. Lesson plan includes lab handout for students.
American Chemical Society
Inquiry in Action: Changing the Density of a Liquid: Heating and Cooling
In this activity, students will investigate whether the temperature of water affects its density. Students will place colored hot and cold water in a cup of room-temperature water to see that cold water sinks while hot water floats. Then...
Science Education Resource Center at Carleton College
Serc: Investigating the Effects of Density and Volume of a Cartesian Diver
In this lesson, students will investigate why the Cartesian diver dives and rises in a 2 liter bottle. They will also, through their own discovery, come up with a question and then change one variable and record their results. Students...
Exploratorium
Exploratorium: Science Snacks: Klutz Proof Density Column
An activity to help you create a density column that contains layers of liquids that are separated by different densities.
American Museum of Natural History
American Museum of Natural History: O Logy: Stuff to Do: Density of Salty Water
An experiment to test what happens when ocean water hits a freshwater estuary. Each step is demonstrated with photographs and the difference between salinity and density is explained.
Science Buddies
Science Buddies: It's Crowded in Here! A Study of Plant Population Density
Like humans, plants can be negatively affected by overcrowding. Unlike humans, plants cannot get up and move to a new environment or explore how to utilize new resources. This experiment will explore the effects of crowding (population...
Science Education Resource Center at Carleton College
Serc: Exploring the Properties of Liquids, With an Emphasis on Density
Students experiment with liquids; comparing and contrasting, and creating a density tower leading to a beginning understanding of density.
National Association of Geoscience Teachers
Nagt: Density Mystery Canisters
Students experiment with items that sink or float, and learn that water's density is equal to one, and objects/solutions with a density greater than one will sink, and those with a density less than one will float.
Chemistry Collective
Chem Collective: Metals Density Problem
In this activity, students use the virtual lab to identify three unknown metals by measuring their density and comparing their measurements to the densities of known metals. In this randomized version, each student designs and performs...
Chemistry Collective
Chem Collective: Identifying an Unknown Liquid From Its Density
In this activity, students use the virtual lab to design an experiment to determine the identity of mislabeled bottles using the densities of the solutions inside.
Other
The Happy Scientist: Making a Density Column
This experiment is one of the classics that is still a lot of fun to play with. It has to do with density. Density can be a difficult concept to grasp, but it is much easier once you have played with a density column. Although the video...
Science Education Resource Center at Carleton College
Serc: Determining Bulk Density of Different Soil Samples and Data Analysis
A field based lab experiment where students work in groups to come up with a collection strategy and lab analysis to test differences in soil bulk densities. Students bring soil samples back to the classroom to conduct a test that...
Science Education Resource Center at Carleton College
Serc: Investigating Buoyancy, Density, and Fluid Principles: Make Mini Submarine
In this lab, students will use the scientific method to design an experiment that explains how/why a submarine floats and sinks.
Sophia Learning
Sophia: Physics: Bill Nye: Eggs Speriment
Created to teach students of the 21st century, SOPHIA is bringing science straight to your fingertips. Become the commander of your own learning experiences as you take part in this density experiment.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Comparing Densities of Different Liquids
This lab experiment has students observe and compare the density of five different liquids while measuring mass and volume.
Other
Lapeer County Schools Science Resources: Density Lab
A simple lab experiment for students to find the density of two solids and a liquid (does not use water displacement). Note that number 1d should not state "weighs" since mass is being found.
Other
The Science House: Daffy Densities
In this lab experiment, students will use 4 solids and 6 liquids to create colorful, layered rows demonstrating that less dense materials will float on top of the more dense materials.
PBS
Pbs Teachers: Hot Air Balloon Experiment
Explore how heat affects the density of air by building and flying a hot air balloon using large plastic bags and the hot air from an electric hairdryer.
PBS
Pbs Teachers: Hot and Cold Water Experiment
Demonstrate the relationship between water temperature and density using two clear plastic soda bottles.
Hunkins Experiments
Hunkin's Experiments: See if a Ring Is Pure Gold
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This one...
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