Can you disprove the law of conservation of mass? Pupils observe the teacher weigh each part of a reaction. Then, the teacher weighs the result of the reaction and everyone sees that the products do not equal the reactants. Then they...

A demonstration of elephant toothpaste hooks pupils' interest as they complete multiple experiments with colors, smells, bubbles, and more. By the end, they understand the differences between physical and chemical changes in the world...

Ready to take your chemistry class on its first big lab adventure? Dive in to differentiation between chemical and physical changes with a thoughtfully designed set of experiments! Partners conduct a series of reactions, describe their...

Astronauts train underwater to simulate the change in gravity. An out-of-this-world unit includes three hands-on activities, one teacher demonstration, and a discussion related to some of the challenges astronauts face. Scholars apply...

Ah, caffeine! What would some of us do without it? Teach your high school chemistry class the concept of sublimation as they complete a hands-on experiment to visualize the changes caffeine undergoes during heating and cooling. They...

Teach the basics of writing chemical equations with a video introduction. The video lesson discusses the components of the chemical reaction and how chemical equations represent each. The discussion includes mention of catalysts and...

On Earth, a candle flame points up, but on the International Space Station, it forms a sphere. Young scientists practice their skills by recording observations before, during, and after a candle burns. Chemical and physical changes...

Whoa! What just happened? That's right, change is everywhere. But what exactly is changing? Middle school science sleuths get to the bottom of the changes matter can experience. Through simple demonstrations, engaging videos, and an...

Take a "conservative" approach to planning your next unit on mass and matter! What better way to answer "But where did the gas go?" than with a lab designed to promote good report writing, research skills, and detailed observation. The...

How does climate change affect you? First in a three-part series, the activity focuses on how individuals living around the world are affected by climate change. Individuals take on the role of a given character and share their...

Use STEM activities within the class to provide connections to concepts. The resource includes activities that range from working with buoyancy to building rockets and launching them. Other activities involve the engineering design...

What is more important, style or substance? This video explains the difference between physical (style) changes and chemical (substance) changes. It uses many examples and various ways of determining which type of change has occurred. 

State changes, i.e., freezing, melting, boiling, evaporation, condensation, sublimation, and deposition are the focus of a presentation that demonstrates that the chemical properties of a substance are not altered in a substance as the...

While the shape, size, and appearance of a substance may change, such changes in state don't change the chemical identity of a substance. That's the big idea in this short presentation covers physical and chemical changes of matter, as...

Super scientists visit ten stations to predict, observe, and draw conclusions about the physical and chemical changes that occur when different states of matter—liquid, solid, and gas—are placed under a variety of conditions. To...

Young scientists investigate chemical and physical changes to the states of matter—gas, liquid, and solid—as well as solutions and suspensions with a variety of demonstrations, grand conversation, and an interactive quiz to check for...

Once I told a chemistry joke, but there was no reaction. Get young chemists involved in changes and reactions with a presentation that begins with physical and chemical changes and chemical reactions. It moves on to chemical equations...

What's the matter? Gas, solid, liquid, or plasma. The presentation covers how to describe and identify matter, changes in matter, types of matter, measuring matter, particles of matter, Democritus, and John Dalton's Atomic Theory.

Designing the right package — it's more than a pretty picture. Challenge small groups to design a food package. They must consider the type of food they are packaging and the package's ability to control the physical and chemical changes...

We are all the same, yet we are all different—just like snowflakes. Learners explore the science behind snowflakes and their uniqueness as they view the video segment on snow. They conclude with a discussion about physical and chemical...

Ready to don medieval costumes and gain a more thorough understanding of the science behind Game of Thrones? Pupils view a short video to explore the intricacies of a popular book and television series, and learn the science behind many...

Ready for a lesson on the wonders of cooking? Young scientists view the short video segment and explore the science of temperature changes on physical and chemical properties in food as the cooking process transforms raw ingredients into...

Engage the class like never before as pupils learn to differentiate between multiple physical and chemical changes by conducting a list of small experiments, most often with household materials. They make observations and discuss the...

"I don't want change; I want swiss!" As Willy Loman bemoans in Arthur Miller's Death of A Salesman, accepting change can be a real challenge. The aim of this session is to encourage class members to see the naturalness and inevitability...