Inquiry experiment
Aim/Purpose :
To see what happens when baking soda and vinegar mix/combine
To see the reaction that occurs when these two substances are mixed
Prediction - What do we think is going to happen:
We think it will explode/ It’s going to blow up
The ziplock bag will pop open and the liquid will spill out
It could fizz up
The bag might fill up with air
Fizz up like soda when shaken
The air pressure created inside the bag will cause the seal on the bag to pop open
Steps:
- Open up a paper towel on a flat surface
- Put 4 levelled teaspoons of baking soda in the centre of the paper towel
- Wrap up the baking soda in the paper towel like a package - Keep the baking soda concentrated in the middle of the paper towel
- Tape down your package of baking soda with a piece of masking tape so that everything stays in place
- Open the vinegar and pour it into a cup - until the cup is half full
- Then open a zip lock bag and pour the vinegar into it
- Hold the package inside the zip lock bag, making sure it doesn’t yet make contact with the vinegar - then zip up the bag - making sure that it is completely closed
- Let the package of baking soda drop into the vinegar and shake the bag up a little so that they start to mix
- Observe what happens
Materials/equipment:
- Baking Soda (4 x tablespoons)
- Vinegar (half a cup)
- Ziploc sandwich bags
- Plastic spoon
- Paper towel
- Masking tape
The Result - What did we see happen?
When we shook the bag it started fizzing and we saw bubbles.
Then after a little while it popped.
Variables - How could we change the variables?
Predict what might happen if we change the variables
Experiment - Were our predictions accurate?
Put 5 or more teaspoons of baking soda into the package and the same amount of vinegar - The explosion happened slower
Two cups of vinegar and same amount baking soda- The explosion happened faster
The Science - Why did the explosion happen?
Baking soda and vinegar react with each other because they exchange atoms. In this reaction, baking soda acts as a base, and takes a proton from vinegar, which is an acid. The reaction releases gas because when the baking soda receives the proton, it transforms into water and carbon dioxide .
No comments:
Post a Comment