DIY Project
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Science · Valentine's Day · Preschoolers

Fizzy heart painting

Paint hearts with baking soda paint, then drip colored vinegar on top and watch them fizz and bubble.

Fizzy heart painting
LevelBeginner
AgesAges 3 to 5
Time30 minutes plus drying
Cost$2 to $5
Valentine's DayRainy day

What you'll need

Materials

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Tools

How to make it

Safety

Vinegar stings eyes, so keep faces back and wash hands after.

  1. Step 1: Mix the paint
    1

    Mix the paint

    Stir the baking soda and water into a thick paste.

  2. Step 2: Paint the hearts
    2

    Paint the hearts

    Have your child paint thick hearts on the cardstock. Set it on a tray.

  3. Step 3: Color the vinegar
    3

    Color the vinegar

    Split the vinegar into 2 cups. Add red to one and pink to the other.

  4. Step 4: Drip and fizz
    4

    Drip and fizz

    Let them squeeze droppers of vinegar onto the hearts. Listen for the crackle.

  5. Step 5: Dry flat
    5

    Dry flat

    Leave it on the tray to dry for a few hours. The colors stay behind.

Edie's tip

Droppers are a fine motor workout. Squeeze, release, squeeze again.

Written by the DIY Project team. How we check · Report a mistake

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