Materials :
·
Balloon
·
clean empty bottle
·
vinegar
·
Baking Powder
Balloon Experiment:
Brainstorm ways to blow up a balloon (e.g. blow air into the balloon,
fill it with helium, etc.) All these ideas are ways to use a GAS to fill up a
balloon.
Using an empty bottle, vinegar and baking soda think of ways to use
these new materials to blow up the balloon. Predict what will happen when
vinegar and baking soda are combined in the bottle.
·
Stretch the balloon to make it easy to inflate.
·
Pour 1 cup of vinegar into the bottle.
·
Pour 6 teaspoons of baking soda into the balloon.
·
Carefully fit the balloon over the mouth of the bottle without letting
any baking soda fall into the bottle.
·
After the balloon is completely over the mouth of the bottle, let the
baking soda fall into the bottle.
·
Observe the balloon expand!
When baking soda and vinegar are
mixed, they form a GAS (carbon dioxide) that rises up into the balloon and
inflates it.
Here are some of the explanations. This is a working document and not completed yet.
From that experiment I learnt that two different substances can form an everyday use and that after the experiment the baking soda went down and when you shake it fizz up.
ReplyDeleteNext time we do it we might swap the vinegar with lemon. When we did it the bottle inside just shot up with a fizz. Our group took 15.10 seconds, the other group took 1 minute and 7 seconds and the oher group took 41 seconds.
ReplyDeleteLastly we tilted the balloon into the bottle and waited for a chemical reaction to occur in 41.55 seconds. The balloon had inflated with carbon dioxide. Carbon dioxide is a colorless and odorless gas.
ReplyDeleteSo what happened here is that the two different substances (liquid and solid) have met and resulted making carbon dioxide which has took up room in the balloon and caused it to inflate.
ReplyDeleteI bet our students were excited to participate in such a WOW !!!!! experiment.
DeleteDid you have any wonderings? I was wondering if it happens with any liquid and solid. You say you will swap vinegar with lemon - what do those liquids have in common? Can you let your blog audience know what you find out? from Mrs Robyns
ReplyDeleteJust fantastic students! We certainly did have a great time investigating the carbon dioxide gas that is produced. Lots of fun to be had! We could make our balloons blow bigger if we added more – would they explode off?????
ReplyDeleteToday we did a science experiment where we used baking soda, balloons and vinegar. We added the baking soda inside the balloon and vinegar in a bottle. Than put the end of the balloon over the bottle opening and tipped the balloon up. As the mixture began to bubble it made the balloon blow up. This was due to the mixture turning into a carbon dioxide which created a gas that blew the balloon up
ReplyDelete