_edited.png)
Objective:
To demonstrate Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction, by creating a simple rocket using baking soda and vinegar. This experiment will help students understand the chemical reaction that produces carbon dioxide gas, the buildup of pressure, and the resulting force that propels the rocket into the air.
For every action, there is an equal and opposite reaction.
WHAT YOU NEED:
Small empty water bottle
Cork which fits tightly inside the neck of the bottle
Half a piece of paper towel
One tbsp baking soda
Vinegar or lemon juice
3 Straws
Tape
INSTRUCTIONS:
Use tape to attach three straws to the side of the bottle so it can stand up upside down.
Pour about 2 cm of vinegar into the bottle.
Wrap baking soda in paper towel to make a small pouch.
Find a hard surface outside for your launch.
Drop the baking soda pouch into the bottle, quickly add the cork, place the rocket down, and stand back!
OBSERVATION:
Watch the bottle rocket as the baking soda is added to the vinegar. You should see the cork pop out and the bottle shoot up into the air.
EXPLANATION: Why Does the Bottle Rocket Launch?
When baking soda (a base) reacts with vinegar (an acid), it forms carbon dioxide gas. The gas builds up pressure inside the bottle, eventually forcing the cork out. This action pushes the bottle downward, creating an equal and opposite reaction that launches the bottle upwards. This demonstrates Newton’s Third Law of Motion.
CONCLUSION:
This experiment shows a chemical reaction and how gas buildup can create force. It's a fun way to see how gases can cause movement and demonstrates the principles of action and reaction.
EXTENSION:
Try different amounts of baking soda and vinegar to see how the launch changes.
Discuss other examples of gas buildup and release, like in balloons or soda cans.
Comments