manual

28
The pieces are brought up to the surface by carbon
dioxide bubbles.
carbon dioxide
(gas)
vinegar
(liquid)
baking soda
(solid)
When you combine vinegar and baking soda you start a chemical reaction
that forms carbon dioxide bubbles (CO
2
).
Observe how the pieces on the
bottom are surrounded by bubbles
and brought up to the surface.
They sink again immediately after
the bubbles burst.