Valentine's Science: Grow Hearts

*As featured on Fox 13's The Place

What you'll need:
Balloon
Marker
Bottle with narrow neck
Funnel
Baking soda
Vinegar
Red food dye (optional)

Here's how you do it:
1. Draw a heart on the balloon.
2. (Optional step) Use the red food coloring to dye about a cup of vinegar red.
3. Pour vinegar into the bottle.
4. Using the funnel, put a tablespoon or two of baking soda into the balloon.
5. Being careful not to dump any baking soda into the vinegar, stretch the neck of the balloon around the neck of the bottle.
6. Dump the baking soda into the vinegar and watch your heart grow!

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