Welcome to the LARGEST STEM EXPO in Texas!

We hope you had a great time today at Dallas ISD STEM Expo 2020!

We value your participation and continued passion for all things STEM! If you haven't already, please explore and enjoy all the educational booths the Expo has to offer.

On behalf of DISD's STEM department and Mad Science of DFW, thank you for coming. Have a STEMtastic day!

Mad science booth at a trade show with people around looking at the experiments

Dry Ice-Capades

Shifting states of matter!

Dry ice is frozen carbon dioxide and has a temperature of -78°C ( -109°F). Dry ice is so cold that it freezes a drop of water in less than 30 seconds. Dry ice sublimates from a solid state and changes directly into a gas state, without turning into a liquid. Dry ice got its name because it never becomes liquid. There are three states of matter: solid, liquid, and gas. Solids have a definite shape, liquids take the shape of their container, and gases fill an entire space.