AboutRalph Salier-Hellendag Expertise Science Fair Judge for many years and experience with robotics, biology, chemistry, industrial processes, metalurgy and metal forming.
Experience Science Fair Judge for many years and have helped several students get to state level competition. Most recently 2 of my students received state level awards and one went on to the nationals in Washington DC.
Education/Credentials BA Archaeology - Anthropology
MA Business Anthropology
Question Hi Ralph
what is the metal used to make the coke can?
Why is this metal used?
why do some of the bubbles seem to stream from one point?
Answer Hi Daniel,
Most cans are now made of Aluminium. Some are made of steel. But those used by Coke-Cola are for the most part Aluminium. This metal is used for several reasons, it is easy to get, easily formed into a can, very good for refrigeration and easily recycled.
As for your last question, I will assume that the can is very cold. Two things may be occuring:
1) the bubbles are very small and when the burst create a mist that looks like steam or
2) the bubbles are very cold and the room temperature is in the 70's or 80's and humid. As the bubbles burst, it releases cold air and the air is condensing the moisture out of the warm humid air creating a fog. It looks like steam. If the sides of the can gets wet quickly, it tells you that this is condensation.
