Heating Brass Ring and Ball

Yesterdays Experiment:
In yesterdays experiment we heated up a brass ring and ball. We were observing it while we were heating them up to see what would happen to them while they're being heated up.






Observations:
We saw that when we heated up the ring it started turning bronze after a few seconds. This could be because the ring is absorbing the heat of the flames and in some sort of way the heat is having a reaction with the material used to make the ring.


I saw that the ball turned from bronze to purple, but it did not glow red like the ring did. This could be because of the shape of the two things. It could also be because the ball was, well a full sphere and the ring had a hole in the middle of it.




We also noticed that when the ball and ring were put in the water, the water would start boiling and splashing everywhere. We're guessing that the temperature has to be above 100 degrees for the water to start splashing everywhere, so when we put the ball and ring in the water they must've been over 100 degrees. Because when you boil water they go up to 100 degrees but it doesn't pass that number, it also doesn't start splashing everywhere on its own.

We noticed that once it has been fully cooled down the ring and the ball will turn back to its original colour, and the same thing will happen again if you were to heat up and cool it down again.

When the two things have been heated up it was a bit difficult to pull out the ball from inside the ring. This could be because the particles in the brass ball have expanded due to the heat energy from the Bunsen burner. The ring has also expanded, this could be because the particles movements have increased, making the hole in the ring expand more.