1. Pour the
carbonated drink into the glass/jar.
2. Drop the
raisins into the glass/jar.
What to see what happens
to the raisins!!!
The bobbing up and down works because
the bubbles of carbon dioxide gas
in the drink are much less dense than
the drink or the raisins.
the raisins start bobbing up and
down, they will continue to rise
and fall for about an hour.
are denser than the carbonated drink,
so they will sink.
- Gas bubbles attach to the wrinkles
on the raisins.
the raisins are covered with the bubbles
they become less dense than the drink,
so they start to rise.
gas bubbles start bursting and then
the raisins become denser than the
drink, so they sink again.