Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Cryogenic liquids are materials with a boiling point of less than – 100 °F (-73 °C); common examples include liquid nitrogen, helium, and argon, and dry ice/alcohol slurries. Cryogenic liquids undergo ...

Students will be able to plan and carry out an investigation to identify a liquid based on how it interacts on different paper surfaces. Students will also be able to explain that since different ...

Liquids and solutions are complex environments—think, for example, of sugar dissolving in water, where each sugar molecule becomes surrounded by a restless crowd of water molecules. Inside living ...