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Fizz & Bubble!
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- Skills
- observing
- communicating
- comparing
- relating
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- Materials
- a squeeze bottle of vinegar (i.e. a liquid detergent
bottle)
- baking soda (poured into a bowl)
- spoons
- small paper or plastic cups
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Doing the Activity
- Put a spoonful of the white powder in your cup.
- Squirt a little of the liquid onto the white
powder.
- Observe what happens. A chemical reaction is taking
place.
- Look around at the other experiments at your table OR
try your experiment again.
- What was the same about the experiments? What was
different?
- What could make the difference?
- Clean out your cup or get another cup to try the
experiment again.
- Can you find a way to get more bubbles? What's the
secret?
Does it matter which you put in first?
Does it matter if you add the liquid slowly or
faster?
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- Talking it over
- What do you think the liquid and the white powder
are?
- What do you think makes the bubbles?
- Have you ever seen any other reaction that looks like
this?
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- What's Happening
- Chemical reactions occur when two or more substances
combine and change into a new substance. Sometimes there
is a visible reaction. When you add baking soda (sodium
bicarbonate) to vinegar (acetic acid), bubbles form which
release carbon dioxide. You no longer have baking soda
and vinegar, but an entirely new set of chemicals that
includes a gas, carbon dioxide.
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More Challenges
- Try the experiment with baking soda and lemon juice.
Try using other white powders. What happens?
- Using your knowledge about chemical reactions, see if
you can design an experiment that will blow up a balloon
without you having to blow!
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- Activity Source
- Sherwood, Elizabeth. More Mudpies to Magnets: Science
For Young Children. Maryland: Gryphon House, Inc.,
1990.
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