Here are the answers to help you complete your Volcano Experiment worksheet.
Prediction:
I think that when I mix the baking soda and vinegar together, they will react and create a lot of bubbles. The mixture will foam up like lava and flow out of the top of the volcano cup.
Experiment Questions:
1.
What role does the dish soap play in the reaction that occurs?
The dish soap traps the gas bubbles created by the reaction. This makes the "lava" thick, foamy, and bubbly, so it looks more like a real volcanic eruption instead of just watery liquid.
2.
What would happen if you added baking soda to the vinegar instead of vinegar to the baking soda?
The same chemical reaction would still happen! You would still see fizzing and bubbling because the two ingredients are mixing. The only difference might be how fast it foams up depending on which one is on the bottom, but the result is the same.
3.
What would happen if you added a different liquid than vinegar (like water)?
If you used water instead of vinegar, nothing exciting would happen. Water is not acidic like vinegar, so it will not react with the baking soda. The powder would just get wet and sit there; there would be no bubbles or eruption.
4.
What would happen if you added [more baking soda]? *(Note: The last question is cut off, but this is the most common follow-up)*
If you added more baking soda, you would have more ingredients ready to react. This could make the eruption last longer or produce even more foam, as long as there is enough vinegar left to mix with it.
Final Answer:
Prediction: The mixture will bubble up and overflow like lava.
Q1: Dish soap traps gas to make thick, foamy bubbles.
Q2: The same reaction happens; it will still fizz and bubble.
Q3: Nothing would happen; water does not react with baking soda.
Q4: (Assuming "more baking soda") It would create a bigger or longer-lasting eruption.
Parent Tip: Review the logic above to help your child master the concept of volcano worksheet for middle school.
