Heat of Vaporization of Liquid Nitrogen

It's time to increase the heat! Young chemists demonstrate heat transfer and heat capacity in an activity-packed lab, showing the transitions between solid, liquid, and gaseous phases of materials. Individuals plot data as the...

Hate to vacuum, but enjoy using a vacuum pump? Explore a lesson that starts with a demonstration of boiling water at various temperatures by using a vacuum pump. Then scholars design their own experiments to measure vapor pressure and...

How does radiation affect our daily lives? Answer that question and others with a lesson that discusses radiation and its use in thermal energy transfer through electromagnetic waves. Pupils investigate vaporization and...

Vapor pressure is the focus of this chemistry video. Sal explains that when molecules are "sticking together," a substance takes on a liquid or solid form. However, when kinetic energy increases, the molecules are forced apart, allowing...

Nitrogen makes up around 78 percent of the air you breathe. A video in a series about chemical elements discusses the proper storage of liquid nitrogen as well as some fun experiments using the element. It also mentions its applications...

Learners experiment with a pure substance and a phase change. In this heating and cooling curves lesson plan, students study the effects of heating and cooling a pure substance to observe a phase change. They determine both the melting...

Manufacturers package foods using nitrogen to help preserve freshness and prevent bacteria from growing. The 14th video in a 15-part series discusses the properties of nitrogen. It has many uses in industry, research, and health, and the...

There's more to melting than meets the eye! Junior physical chemists investigate the differences between specific and latent heats as a substance undergoes a phase change. Users remove heat from the system and observe changes in kinetic...

What happens inside a melting solid? Prospective physical chemists observe a solid-to-liquid phase change at the molecular level using an inspired interactive. Pupils add heat to a close system, then monitor changes in kinetic and...

Scholars learn about heat release in phase changes. They perform calculations as they compare and contrast a science fiction passage and a home heating application.