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Valentines Day Baking Soda Science: Fizzing Hearts!

Transform classic baking soda science into something fit for Valentine’s Day STEM activities with these super-fun fizzing hearts reactions learning about Valentines Day baking soda science! My preschooler is a huge fan of vinegar and baking soda reactions. She always gets really excited when she sees me breaking out the vinegar and baking soda. She loves watching the fizzy reactions and playing in the mixture when it’s done reacting. We’ve made fizzing rainbows, fizzing ornaments, and fizzing Easter eggs. 

Transform classic baking soda science into something fit for Valentine's Day with these super-fun fizzing hearts reactions!

This time, I decided to make the experiment Valentine’s Day themed with these fizzing hearts!

My kids had a blast with this simple experiment, and it was so much fun to see the hearts melt away.

valentine stem challenges

Valentines Day Baking Soda Science

Kids will love this fun Valentine’s Day twist on the classic baking soda and vinegar reaction science experiment.

It’s a fun way to bring a little love into your science classroom!

Kids will have a blast squeezing vinegar onto their hearts and watching them slowly melt away.

Valentines Day Baking Soda Science Explanation

These fizzing hearts are the perfect way to introduce preschoolers to chemical reactions!

When baking soda and vinegar react, it creates a reaction that releases carbon dioxide gas.

This is what causes the baking soda to fizz.

The baking soda and vinegar reaction is what is known as an endothermic reaction, because the resulting reaction is cooler than the surrounding air.

Who knew science could be so fun! You can also learn what is a chemical reaction for kids to complete your chemistry lesson plan.

Also try these other chemical reactions: borax slime, laundry starch slime, melting pokeball, and fluffy slime!

More Valentine’s Science Experiments

These science experiments are all preschool-friendly!

Classroom Valentines from Teachers to Kids

Your students will love any of these creative classroom valentines for kids from their teacher!

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Printable Tea Pun Valentines that Kids Will Love

If you want the best non-candy valentine for kids, look no further than these zoo printable valentines for kids! Kids will love these punny valentines that include a toy zoo animal with every valentine.

Zoo You Want to Be My Valentine Zoo Printable Valentines

If you need a creative and boy-friendly valentine, these army men printable valentines are the perfect non-candy valentines for your son's classroom! #valentinesday #printablevalentines #valentines #kidsvalentines

Army Men Printable Valentines for Kids

stem valentines for kids

Printable STEM Valentines for Kids

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Ingenious School Valentines Ideas For Classmates

STEM valentines celebrate the science side of Valentine's Day! These printable STEM valentines are the perfect class valentine for scence-loving kiddos.

Magic Erupting Color Reveal Science Valentines for Kids

chemistry valentines puns

Printable Punny Chemistry Valentines for Kids

Love Valentine's Day? You'll love these adorable printable heart non-candy LEGO valentines perfect for classroom parties or just for fun!

Printable LEGO Valentines for Aspiring Engineers!

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Fidget Transformers

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Invisible Ink Classroom Valentines

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Classroom Valentine Food Building Valentines

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Parachute Classroom Valentines

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Valentine Love Bot Valentines

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Classroom Valentines Erupting Volcano Science

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Classroom STEM Robot Building Kit

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Classroom Fuse Bead Valentines

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Maze Classroom Valentines

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Paper Plane Classroom Valentines

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Classroom Valentine STEM Kits

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Flower Building Classroom Valentines

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Valentines Day Appliance Building Block Valentines

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Animal Building Classroom Valentines

Fizzing Heart Reaction STEM Integration 

Science: Try different variables: will changing the temperature of the vinegar alter the reaction? Will other acids cause a reaction? Will adding more base ingredients stop the reaction?

Technology: Try filming the reaction and watch it again later!

Engineering: Do different shapes change how the reaction happens?

Math: See how long it takes for the reaction to stop.

What you’ll need to make fizzing hearts baking soda science:

Disclaimer: This post contains affiliate links at no cost to you for your convenience. 

ARM & HAMMER Baking Soda, 13.5 PoundARM & HAMMER Baking Soda, 13.5 PoundWilton 417-2588 6-Piece Nesting Fondant Double Sided Cut Out Cutters, HeartsWilton 417-2588 6-Piece Nesting Fondant Double Sided Cut Out Cutters, HeartsFood Coloring Liqua-Gel - 12 Color Variety Kit in .75 fl. oz. (20ml) BottlesFood Coloring Liqua-Gel – 12 Color Variety Kit in .75 fl. oz. (20ml) BottlesHeinz Distilled White Vinegar, 1 gallonHeinz Distilled White Vinegar, 1 gallonDoodle Hog Crafts Arts and Crafts Multi Purpose Medium Organizer Tray Set, Medium (Pack of 4)Doodle Hog Crafts Arts and Crafts Multi Purpose Medium Organizer Tray Set, Medium (Pack of 4)

Teaching Resources for Valentine’s Day

Here are some fun STEM teaching resources for Valentine’s Day that you can use in the classroom.

Browse the entire category of Valentine’s Day classroom supplies here or grab some of my Valentine’s Day favorites from the list below.

valentine build a bot

Love Bot Science Bots

learning resources pumping heart model

Pumping Heart Model

edible candy food science chemistry kit

Candy Chemistry Science Lab

yumology sweets lab candy science

Yumology Candy Science Kit

glowing candy lab science kit

Glowing Candy Lab Science Kit

exploding candy lab science kit

Exploding Candy Lab Science Kit

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Chemistreats Classroom Candy Science Kits

lolipop lab science kit

Lollipop Lab Candy Science Kit

candy vending machine stem kit

Candy Vending Machine

candy perfume lab science kit

Candy Perfume Science Lab

lego roses

LEGO Roses

plasma heart

Plasma Heart

cross section heart model

Cross Section Heart Model

lego flower bouquet

LEGO Flower Bouquet

lego valentine heart bear

LEGO Valentine Heart Bear

cute valentine building block bears

Valentine Building Block Bears

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Valentine Bear Building Kit

clockwork heart building kit

Clockwork Heart Building Kit

lego friends flower and chocolate box

LEGO Friends Flower and Chocolate Kit

valentine lego card swans

LEGO Pop up Valentine Card with Swans

lego love birds

LEGO Love Bird Building Set

building brick lego candy shop

Building Brick Candy Shop

lego valentine wreath

LEGO Valentine Wreath

Valentines Day Baking Soda Science Experiment Directions

Here is how to do the Valentines Day baking soda science experiment!

First, mix just enough baking soda with water to make a paste. Add a couple of drops of red food coloring and mix.

Valentine Science Books and More!

These fun Valentine’s Day Books for kids will teach kids about the science around Valentine’s Day, the history of the holiday, and a whole lot more!

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The Calendar Kids Meet February Book

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Valentines Day Math Workbook

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In My Heart a Book of Feelings

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I Love You Around the World Valentine Coloring Book

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Valentine Activity Book

candy bites the science of sweets book

Candy Bites the Science of Sweets

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Celebrate Valentine’s Day Holidays Around the World

valentines day coloring book for kids

Valentine’s Day Coloring Book

hear your heart science book for kids

Hear Your Heart Science Book

cadiology for kids book

Cardiology for Kids Book

valentines day riddles book

Valentine’s Day Riddle Book

lego valentines day fun

Build Valentine’s Day Fun with LEGO

Place your heart cookie cutter into your dish and place the baking soda paste into the cookie cutter.

Transform classic baking soda science into something fit for Valentine's Day with these super-fun fizzing hearts reactions!

Mash the paste with your fingers to mold it to the heart shape.

Carefully pull the heart cookie cutter away from the paste and you’ll be left with a heart.

Transform classic baking soda science into something fit for Valentine's Day with these super-fun fizzing hearts reactions!

Give the dish to your kids and give them a little dish of vinegar and a pipette.

Transform classic baking soda science into something fit for Valentine's Day with these super-fun fizzing hearts reactions!

Instruct the kids to use the pipette to scoop up vinegar and squeeze it onto the baking soda hearts. They will start to fizz and react.

Transform classic baking soda science into something fit for Valentine's Day with these super-fun fizzing hearts reactions!

Repeat the process until the reaction stops.

valentine stem challenges

Valentine Classroom Decorations

Add some Valentine’s Day festivities and flair to your classroom with these classroom decorations for Valentine’s Day!

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Valentine’s Day Door Decorating Kit

love letter garland decoration

Love Letter Garland

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Tissue Paper Classroom Valentine’s Door Decorations

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Valentine’s Day Classroom Window Clings

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Valentine Letters Classroom Door Decorations

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Valentine’s Day Classroom Decorating Kit

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Our Class is Sweet Cupcake Valentine’s Day Classroom Decorating Kit

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Our Love for Learning Grows and Grows Classroom Decorations

a class full of sweethearts valentines day decorating kit

A Class Full of Sweethearts Classroom Decorations for Valentine’s Day

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