The baking soda
reacts
with the lemon
juice to form new substances. One of the
substances is the gas
carbon dioxide
. The gas
fills the balloon. The more gas there is, the
bigger the balloon becomes.
What happens?
3
Put the baking
soda into the cup.
1
2
Add a squirt of dish
soap and mix the two
together.
You will need:
Juice from a lemon
A jug
Dish soap
A large clear plastic cup
1 teaspoon of baking soda
A teaspoon
M
a
k
i
n
g
B
u
b
b
l
e
s
If you want to
see the carbon
dioxide, then try
this experiment.
Add the lemon juice and watch
what happens. The bubbles are
carbon dioxide trapped in a thin
film of dish soap.
13
