This document provides instructions for a science experiment combining baking soda and vinegar. It instructs students to tie back long hair, wear eye protection if necessary, and pay attention to the teacher. The experiment involves pouring vinegar into a bottle and baking soda into a balloon, then releasing the baking soda into the vinegar to produce carbon dioxide gas that will inflate the balloon. Students are asked to observe what happens and analyze the results, concluding that the baking soda and vinegar produce gas by a chemical reaction.

1. True or false?
I should……

2. Play with science equipment.

3. Tie back long hair.

4. Wear eye protection if necessary.

5. Keep paper and books near the
burner.

6. Not pay attention to the teacher.

7. Today, we
should….

8. NOT play with science
equipment.

9. Tie back long hair.

10. Wear eye protection if necessary.

11. But today, it is NOT necessary!
Just be careful.

12. And of course, pay attention to
Ms. Milan!

13. On to the experiment!

14. Step 1: Define the Problem
What will happen if I combine
baking soda and vinegar?

15. Step 2: Form a Hypothesis
After mixing water and vinegar
together with baking soda, I
think….
Write the hypothesis in your
book on page 22.

16. For this experiment, we will use…

17. Test the hypothesis: Step 1
Using your funnel
pour vinegar into
your bottle.

18. 1/3rd of the bottle
should be filled

19. Step 2
Using another
(dry) funnel pour
baking soda into
your balloon.
Fill the balloon
approx. 1/2 way.

20. Step 3
First, stretch the balloon.
Then, cover the top of the
bottle with your balloon.
Make sure you don't let the
baking soda spill into the
bottle early.

21. Step 4
When ready, lift
your balloon and
let the baking
soda fall into the
vinegar.

22. Let’s watch and see what happens!
https://www.youtube.com/watch?v=JK5-2X_GqP8

23. Step 6: Analyze and
draw conclusions
Open to page 25 and
answer the questions in
your book.
Include any other
observations.

24. Step 6
Discuss how the
baking soda &
vinegar produce a
gas which fills the
balloon.

25. Because HC2H3O2 (the acetic
acid in vinegar) + NaHCO3
("baking soda") gives:

26. NaC2H3O2 (sodium acetate) +
H2CO3 (carbonic acid). The
carbonic acid then
breaks down into H2O (water)
and C2O( carbon dioxide).