How can we reduce carbon emissions and make safer solvents, all at the same time? Part four in a 12-installment green chemistry series demonstrates how chemists have traded in their hazardous go-to solvents and begun using safe...

Many people use dilution when cooking sauces, soups, and gravy. The 29th lesson in a 30-part series explains how scientists use dilution in a chemistry lab. The activity focuses on the equation for solving dilution problems and...

Examine the chemistry of the laundry room! A thorough video explains the polarity and non-polarity properties of soap. The tutorial continues to explain the advantage of these properties in stain removal by showing the bonding of the...

Oil refining uses fractional distillation to separate the various fractions of crude oil. Scholars perform fractional distillation to separate rubbing alcohol from water. The second lesson in a seven-part series focuses on the process...

Explore the mathematical relationship between a solvent and solute. Learners use technology to measure the cooling patterns of a solvent with varying concentrations of solute. Through an analysis of the data, pupils realize that the rate...

Study the properties of solutions as they relate to mixtures. The slide show presents the key concepts involved with solutions including solvents, solutes, solubility, and electrolytes. Scholars learn the basics of the properties of...

When no more solute can be dissolved into a solvent, the solution has reached saturation. The interactive simulation allows learners to manipulate a solution in order to measure its concentration. The amount of solvent, the amount and...

When making sweet tea, why do people dissolve the sugar in hot tea instead of cold tea? The class discusses the previous lab and builds upon it. Working in groups, they design an experiment to determine how temperature affects the...

If H2O is water and H2O2 is hydrogen peroxide, what is H2O4? Drinking, bathing, and cooking among others. Viewers of a short video explore water through its molecular structure, its ability to stick to itself through adhesion (cohesion...

Groups use alcohol and chromatography paper to separate the color components of black ink. The purpose of the activity is to allow the class to become aware that mixtures exist in hidden places. 

Details why the polarity of water is so important to life with a video that explains how polarity impacts cohesion, adhesion, capillary action, high specific heat, and solvents.

Learn about the wonders of water and why it is required for life. The resource contains a simulation to see how the molecules interact as a medium for metabolism. 

Water is crucial to survival. Scholars gain an appreciation for water by reading about it, learning about its atomic properties, and investigating its properties through six stations in a lab activity.

The Earth is over 70% water and so are our bodies. What makes water so special? Learn about water and its properties as it relates to solutions, dilutions, electrolytes, and molarity.

Show young learners that water is a unique compound with one-of-a-kind properties. The second video in an eight-part series analyzes the life-supporting properties of water. It discusses water as a solvent, adhesion and cohesion...

Avoiding lab safety rules will not give you super powers. The lesson opens with a demonstration of not following safety rules. Then, young chemists practice their lab safety while finding the mass of each item in a mixture and trying to...

What happens when you combine 6.022 times 10 to the 23 piles of dirt into one? You make a mountain out of a mole hill. Scholars use dehydration to obtain percent composition and then calculate the molarity of the original solution. 

Why does some ink bleed through paper, and other ink doesn't? Practice some paper chromatography to separate the colors from a pen with an interactive experiment for middle and high schoolers. Learners use a variety of solutions to track...

High school chemistry class members become "detectives for a day" and use the concept of paper chromatography to analyze a note left at the scene of a crime. Pupils test the ink on the note with a solvent, such as isopropyl alcohol, to...

What do iced tea and fruit salad have in common, besides the fact that they're both delicious? Learn about the different types of mixtures with an entertaining physical science video. Examples from a picnic table reinforces what young...

Young scientists demonstrate their understanding of cell transport on this comprehensive worksheet. Focusing on cellular structure and the different processes that allow materials to move into, out of, and throughout animal cells, this...

Take your biology class on an exploration of the inner workings of cells with this multimedia presentation. Looking closely at the structure of cell membranes and the processes of osmosis and diffusion, this resource explains for...

Beginning biologists place a drop of food coloring into water of differing temperatures to observe the effect on the diffusion rate. They remove the shells from raw eggs and then experiment with osmosis over the remaining membranes....

Here is a different approach to solutions: a worksheet that has chemistry learners use words to describe them! This is an outstanding exercise that will stretch learners to show what they know. They answer questions comparing solutions,...