Learn with us online while the Exploratorium is temporarily closed. You can help us reopen—donate today.

States of Matter

Science activity to see how water levels change with temperature.
Swelling Seas

How does water volume change with temperature?

Science activity that demonstrates how volume, pressure and temperature are related.
Put a new twist on pressure changes.

Put a new twist on pressure changes. 

Science activity to visualize air pressure with the help of a self-rolling pet toy
Wiggle Pressure

Visualize air pressure with the help of a self-rolling pet toy.

A science activity exploring the law of conservation of mass
Wait, Weight, Don't Tell Me!

Have a gas with the conservation of mass.

Icy Bodies
Icy Bodies

Small chunks of dry ice jet and swirl across a liquid surface.

Science activity to make water boil at room temperature
Boyle-ing Water

Watch water boil at room temperature.

Science activity to demonstrate the Magnus effect by launching cups with rubber bands
Curveball Demonstrator

Give flight a spin with the Magnus effect.

Science activity experimenting with a frozen water balloon
Ice Balloons

Create and examine an ice balloon.

Science activity that infuses vegetables with a tasty brine—instantly—using a syringe
Flash Pickling

Take the pressure off pickling.

Science activity that explores the properties of gases and the anatomy of an egg
Gassy Eggs

Eggsplore gas properties while making a snack.

Science activity that explores the relationship between volume, density, and pressure
Out of Sink

Make a reverse Cartesian diver.

Science activity that shows the effect of temperature on pressure
Hand-Held Heat Engine

Make the liquid in this toy rise and fall in a cycle.

Pages