Aul that and more

Edible Experiment #28 August 29, 2016

Area of Science: Physics
Age Range: preschool and up
Materials Needed: Water
A syringe

Background: The boiling point is the temperature at which a liquid transforms into a gas. In the case of water, the boiling point is 100 degrees Celsius (212 degrees Fahrenheit). Pressure can affect the temperature at which something boils. As you lower the pressure, the boiling point lowers. This is the reason cookbooks will give instructions for higher altitude.

Instructions:
Using the plunger, pull a small amount of water into the syringe. You only need enough that you can see what’s going on. Don’t fill it completely.
Turn the syringe upside down, with plunger facing down. Cover the opening with your finger or some kind of air tight cap.
Pull the plunger down. You should see tiny bubbles start to form inside the liquid. It may take a few tries to get it to work well enough that you can observe it.

Sources: chemistry.about.com/od/gase1/fl/Boil-Water-at-Room-Temperature.htm