This video segment adapted from NOVA explains the origin of the elements and how scientists use unique element profiles to identify supernova types.

How do we use radiation in our lives, and is it safe for humans? How do we use radiation in our lives, and is it safe for humans? This unit begins with a news article about the unconventional use of microwave ovens to store electronics. Students are motivated to test the behavior of a Bluetooth speaker playing music from a device inside the oven when it is not running. They also test what happens when it runs and heats up food. This phenomenon sets the stage for exploring wave behavior, the interactions of matter with electromagnetic radiation, and how we can use these interactions in different technologies to digitize, store and transfer information. ​​Throughout the unit, students use simulations to model field interactions and energy transfer through electromagnetic radiation. They conduct investigations using the microwave oven to explore how different materials interact with microwave radiation, and how the structure of this device affects energy transfer. Students explain how the frequency and amplitude of electromagnetic radiation affects its interactions with matter and evaluate the wave and photon models of electromagnetic radiation. Students obtain and communicate information about the uses of electromagnetic radiation, its safety, and methods of protection. They apply these ideas in a culminating task to evaluate whether 5G technology is safe.

OpenSciEd content is highly rated in EdReports and is aligned to NGSS standards.

In this interactive activity from ChemThink, examine the basic properties of matter at an atomic level and consider how various atoms affect the way a substance behaves.

This interactive periodic table developed for Teachers' Domain provides detailed information about the chemical properties of elements and illustrates the electron configurations that determine those characteristics.

Simulate the original experiment that proved that electrons can behave as waves. Watch electrons diffract off a crystal of atoms, interfering with themselves to create peaks and troughs of probability. Java required.

Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the interaction potential to the forces between molecules.

Students learn about the basic principles of electromicrobiology—the study of microorganisms’ electrical properties—and the potential that these microorganisms may have as a next-generation source of sustainable energy. They are introduced to one such promising source: microbial fuel cells (MFCs). Using the metabolisms of microbes to generate electrical current, MFCs can harvest bioelectricity, or energy, from the processes of photosynthesis and cellular respiration. Students learn about the basics of MFCs and how they function as well as the chemical processes of photosynthesis and cellular respiration

The behavior of light waves is introduced and discussed. Also, polarization, color, diffraction, and interference are introduced and discussed thoroughly as supporting evidence of the wave nature of light.

In this video lesson, students will achieve the following learning objectives: 1) Become familiar with the fourth state of matter, "plasma"; 2) Understand the concept of plasma: 3) Compare the four states of matter; and 4) Learn some applications of plasma. [28:24]

Students explore how energy is transferred and how it can be converted into different forms, and learn about renewable and nonrenewable energy while looking towards the world’s energy future.

In this interactive periodic table from the NOVA Web site, find out the role of various elements in making fireworks.

A simple discussion of the differences between inductive and deductive reasoning. Helpful to anyone who is having difficulty differentiating between the two.

Explore material properties as Ruff Ruffman investigates to find the best material to make a rhino raincoat. [5:27]

Rock out with Ruff Ruffman and Fluff as they sing about the best materials. [2:23]

Explore kitchen chemistry as Ruff Ruffman tries to figure out how to un-toast toast. [5 min, 13 sec]

Explore material properties as Ruff Ruffman figures out how to keep a rhino from ruining his roommate's apartment. [7:31]

Explore structural science as Ruff Ruffman uses his new service, called "Ask Ruff First" or "ARF, to find out if you can build a chair from a newspaper. [4:59]

Learn about kitchen chemistry alongside Ruff Ruffman. Students can use the videos, games, and activities from The Ruff Ruffman Show to discover how by investigating solids and liquids and exploring heating and cooling, science can help you become a better cook!

Explore material properties as Ruff Ruffman tries to find the right material to transform Fluff the Rhino into Fluff the Dog. [4:08]

There are many misconceptions about the chemistry concept, "Conservation of Mass". Thus, the aim of this video lesson is to teach students about the chemical concept of Conservation of Mass through several chemistry experiments. [17:10] (English Subtitles)