14 Valentine Science Experiments

Over 14 simple science experiments for Valentines Day! Using a combination of chemistry and physics, our Valentines Day science activities are absolutely kid friendly. Great for Valentine science activities for preschoolers to elementary! All you need are basic, inexpensive supplies for these easy and fun science experiments to try this Valentine’s Day!

Explore Science For Valentine’s Day

How awesome are these Valentines Day science experiments! You are going to find a treasure trove of simple science activities to set up this month with your kids. Plus, they all use inexpensive supplies.

Perfect Valentine’s Day science experiments for a limited budget and a limited amount of time! Even find a fun few science projects with candy hearts. Our Valentine science experiments include…

• Fizzy eruptions
• Homemade Slime
• Lava lamps
• Crystals
• Oobleck
• Bubbles
• And so much more…

Easy Valentine’s Day science activities that you really can do with your kids. Simple science concepts for preschoolers to elementary, or ages 3-9. Of course, adults and older kids can still have lots of fun too!

If you are getting ready to put together a fun Valentine’s Day science lesson, you will find everything you need right here.

Setting Up Science Experiments For Kids

Science learning starts early, and you can be a part of that with setting up science at home with everyday materials. Or you can bring easy science experiments to a group of kids in the classroom!

We find a ton of value in cheap science activities and experiments. All our science experiments use inexpensive, everyday materials you can find at home or source from your local dollar store.

We even have a whole list of kitchen science experiments, using basic supplies you will have in your kitchen.

You can set up your science experiments as an activity focusing on exploration and discovery. Make sure to ask kids questions at each step, discuss what is happening and talk about the science behind it.

Alternatively, you can introduce the scientific method, get kids to record their observations, and make conclusions. Read more about the scientific method for kids to help you get started.

Helpful Science Resources To Get You Started

Here are a few resources that will help you introduce science more effectively to your kiddos or students and feel confident yourself when presenting materials. You’ll find helpful free printables throughout.

• Best Science Practices (as it relates to the scientific method)
• Science Vocabulary
• 8 Science Books for Kids
• All About Scientists
• Free Science Worksheets
• Science Supplies List
• Science Tools for Kids
• Join us in the Club

Free Printable Valentine STEM Calendar

Valentine’s Day Science Experiments

Click on the titles below to see how we set up each Valentine’s Day science experiment. Get a list of the supplies you need. You may even have what you already need to start a few this week.

Let’s get started with the science fun!

Crystal Hearts

Borax crystal hearts are easy to grow at home with just a couple of ingredients! You can grow crystals overnight with little effort. Plus they last a long time too! Also check out our salt crystal hearts.

Dissolving Candy Heart Experiment

Science experiments for Valentine’s Day should most definitely include conversation candy hearts! Try this easy dissolving candy heart experiment to explore solubility.

Candy Hearts Oobleck

Only 2 ingredients, oobleck is a simple kitchen science experiment that explores non-Newtonian fluids. Adding the conversation candy hearts gives it a fun Valentine’s Day twist!

Melting Chocolate Experiment

A melting chocolate experiment is not only a great way to talk about reversible change. But it’s all delicious too! What happens when you heat up chocolate?

Valentine Slime

Click on the link to find all our Valentine slime recipes. Several variations give you an opportunity to choose what you like or make all ! Each recipe will give you awesome slime quickly! Ready to play in 5 minutes! Bonus, free printable Valentine slime labels included.

A few of our favorites…

• Bubbly Slime
• Heart Slime
• Fluffy Slime

Water Displacement 

You can take simple experiments like this water displacement idea and give it an easy Valentine’s Day theme!

Oil and Water Experiment

Explore simple liquid density with this easy to set up Valentine’s Day oil and water experiment.

Valentine’s Bubble Science

Kids love bubbles and there’s some fun simple science to go along with this activity too. Bubble science isn’t just for summer!

Viscosity Valentine Science Experiment

Explore viscosity using a variety of common household liquids and a Valentine’s Day theme!

Heart Lava Lamp

A classic science experiment with a fun Valentine’s Day theme makes for a fun Valentine science! Also check out our awesome Valentine’s Day erupting lava lamp.

Valentine Skittles

Try this take on a classic skittles science activity perfect for Valentine’s colored skittles!

Cupid’s Magic Milk

Try this take on a classic magic milk science activity perfect for Valentine’s Day!

Science Valentine’s Cards 

Find a fun assortment for science theme Valentine’s Day cards along with this fun experiment card. Click here for all of the options we currently offer.

Bonus Valentine’s Day STEM

Candy Science Sink the Boat is a great STEM challenge with sink, float, and math. How many conversation hearts does it take to sink the “boat”.

Exploring Flowers Through Science and Art {STEAM} allows kids to use flowers to paint or to paint the flowers! Take apart the flowers, examine the flowers, and learn about the parts of the flower all while creating with a unique art process.

Make heart patterns on a DIY geoboard for a fun Valentine’s Day math activity.

Check out all our Valentine’s Day STEM Activities