Science Buddies: "Ask an Expert"

Morning everybody,

For the 10th of december I need to prepare an abstract for a science fair project and I was thinking about why certain reaction makes sounds ?
Like hot butter and cold water (cooking) or something really hot put on the sea.

I'm in 12th grade in the European School in Varese

Thank you

Hi marquito52,

Welcome to the Ask an Expert forums! I'm glad that you are doing a science fair project, and we are happy to help you along the way. Given your topic of interest, a great place to start is doing some research about sound in general. What are sound waves? How are they generated? How do we actually hear sound waves? These two sets of pages from the Hyperphysics resource are a good starting point:

http://hyperphysics.phy-astr.gsu.edu/hb ... op.html#c1
http://hyperphysics.phy-astr.gsu.edu/hb ... oucon.html

With a general understanding of how sound waves are made and how we hear them, you can then start to look at why certain reactions make certain sounds. Is there one particular variable you would like to study, such as the temperature difference between reactants, etc.?