Teach Engineering
Properties of Mixtures vs. Solutions: Mix It Up!
Now it becomes crystal clear why the unit is called Mixtures and Solutions. The fifth installment of a six-part unit explores mixtures and solutions. After viewing a demonstration on mixing pebbles with water, salt with water, and...
PBS
Sea Surface Temperature, Salinity, and Density
Earth's vast ocean is full of mysteries! Science scholars discover the big-picture properties that influence its characteristics at different latitudes using a lesson from PBS's Weather and Climate series. After completing a background...
Curated OER
The Effect of Dissolved Salt on the Boiling Point of Water
Explore the properties of solutions with a lab activity. Chemistry fans determine the boiling point of water, add salt to create a solution, and then repeat the process four more times. They design their own data table and then graph the...
Curated OER
Properties of Salt
Students see how the properties of salt affect the color of flame, the flow of electricity, and the freezing temperature of water. They identify salt and sugar crystals under a microscope and discuss various practical uses of salt.
California Academy of Science
Coral and Chemistry
Using cabbage juice as a pH indicator, future scientists explore the effect of increasing carbon dioxide on the pH of the ocean and relate it to the health of coral reefs. Ideal for an earth or environmental sciences course, this lesson...
Curated OER
So Much Water, So Little to Drink
Students explore salt and fresh water. In this water lesson, students investigate the amount of Earth covered by water. Students compare the amounts of salt water to fresh water. Students create a visual representation to aid comprehension.
Creative Chemistry
How Soluble are Salts and Hydroxides in Cold Water?
In this solubility learning exercise, learners are presented with a table that shows the solubility of salts and hydroxides in cold water. The table shows which salts and hydroxides are soluble and which are insoluble.
Curated OER
Contaminated Drinking Water
Students explore water and determine whether or not it is safe to drink. In this water exploration lesson, students are split into groups, to acts as the polluter, taster, and recorder. Students explore by placing different amounts of...
Curated OER
Properties of Salt
Learners discuss certain properties of salt and how it is used every day as well as harmful uses. They experiment with salt to see it conduct electricity, form crystals and water freezing temperature. They complete a worksheet to record...
Curated OER
TE Lesson: What to Wear? What to Drink? Weather Patterns and Climatic Regions
Students examine how climate affects lifestyle, clothing choices, food, and water sources. They explore climatic regions such as tropical, desert, coastal, and alpine situations. They look at the longitude and latitude, land features and...
Curated OER
Osmosis and Dialysis
How do you engage pupils in a discussion about osmosis without leaving them overwhelmed? By providing them with the tools to perform an exciting experiment, and they will see osmosis in action! Young chemists and biologists use...
Curated OER
Salt of the Earth: A Caddo Industry in Arkansas
Middle schoolers explore the history of the Caddo Salt Industry found in Arkansas. Along with learning about how salt deposits formed in Arkansas, learners study the process of salt production and how valuable salt is as a natural...
US Geological Survey
Water, Water, Everywhere?
Less than one percent of the earth's water is available for human use. A hands-on activity models the phenomenon for young scientists. Beginning with a specific volume of water, learners remove water that correlates to the percent of...
American Chemical Society
Entropy and Enthalpy Changes
My room isn't messy — it's a scientific experiment in entropy! Scholars investigate entropy, enthalpy, and spontaneity through a guided procedure and set of questions. The lesson connects the Second Law of Thermodynamics, energy...
Curated OER
Boiling and Freezing Points of Water
Challenge your sixth graders with this lesson about the freezing and boiling points of water. In these activities learners graph temperature data, read and analyze information, and identify the freezing and boiling points of water and...
Royal Society of Chemistry
A Microscale Acid-Base Titration
Watch as acids and bases put smiles on their faces. Young chemists learn the concept of acid-base titration firsthand in a microscale experiment. Working groups collaborate, titrate, then use their data to determine the concentration of...
Curated OER
Sand and Water
Students follow this recipe for fun clay creations. In this early childhood art and science lesson, students develop creative-thinking skills, fine-motor skills, and sensory awareness while they make, mold, and decorate salt dough.
Curated OER
Water Pressure in the Ocean
Students compare the pressure of water at different depths and gain an understanding of how increased water might affect animals living in deeper waters. They participate in an experiment to show that depth, not volume, affects water...
American Chemical Society
Changing the Density of a Liquid - Adding Salt
Fourth in a set of several little lessons on density, this one compares the density of fresh and salt water. First by demonstration, and then by a hands-on activity, learners find that adding salt increases the density, as is evidenced...
DiscoverE
Water Sampling
What is the best way to test water quality? Using plastic bottles, scholars create monitoring sensors to test water quality. Creating three different sensors allows individuals to measure water quality at different water levels.
LABScI
Acids and Bases: Cabbage Juice pH Indicator
Explore the range of pH using an assortment of household liquids. Scholars create their own pH indicators from cabbage and determine the pH of several liquids. To further their exploration, individuals use the same liquids to create...
Curated OER
Conductivity - Pass the Buoy and Pepper, Please
Buoys around our coastlines are equipped with sensory devices which monitor temperature, salinity, and water pressure. Emerging earth scientists examine some of this data and relate salinity to the electrical conductivity of the surface...
Curated OER
Environment: Water & Air
The introduction to the lesson mentions a sailor's limited capacity to store drinking water on his ship. Pupils then set up an overnight experiment to remove freshwater from salt water by distillation. There is a math and map activity to...
Curated OER
Shake, Rattle and Roll
Young scholars compare the weathering of materials. in this weathering lesson, students experiment with the chemical and physical weathering of different materials. Young scholars use salt and water as an example of how weathering occurs.