Here is a fun and simple experiment that you might want to try!
MATERIALS
·
Pop Rocks
·
Balloons
·
Funnel
·
Bottles of soda
EXPERIMENT
1.
Pour an entire package
of Pop Rocks into a balloon. You might be able to carefully pour the candies
into the balloon's mouth, but a funnel makes it much easier. Place the narrow
end of the funnel into the mouth of the balloon and empty the Pop Rocks packet
into the funnel.
2.
Place the balloon over the
mouth of a bottle of soda. Be careful! You don't want the Pop Rocks to drop
into the soda before you're ready.
3.
Are you ready? Grab the
balloon and dump the Pop Rocks into the soda. Observe what happens as the
liquid reacts with the candy. The
balloon should be inflating, even if the change is only very slight.
HOW DOES IT WORK?
The
secret behind the famous "popping" of Pop Rocks candy is pressurized
carbon dioxide gas. Each of the tiny little candy pebbles contains a small
amount of the gas. These tiny carbon dioxide bubbles make the popping sound you
hear when they burst free from their candy shells.
Why
does the balloon inflate? The carbon dioxide contained in the candy isn't
enough to cause even the small amount of inflation you observe in the
experiment. That's where the soda comes into play. The soda also contains
pressurized carbon dioxide gas. When the Pop Rocks are dropped into the soda,
some carbon dioxide is able to escape from the high fructose corn syrup of the
soda and, because the carbon dioxide gas has no where to go in the bottle, it
rises into the balloon.
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