Valentine’s Day is coming round shortly; whether or not you have a good time or not, you will LOVE this assortment of Valentine’s Day science experiments. Make a Skittles coronary heart, a paper aeroplane supply system, colour-changing love potions and much extra!
Valentine’s Day Science Experiments
Coronary heart Patterns
First up are tremendous easy coronary heart patterns. Minimize out totally different colors and sizes of hearts and use them to make coronary heart patterns. If you wish to combine it up, add some flower shapes too!
Coronary heart shapes are additionally nice for practising slicing and people necessary superb motor abilities.
Make a fizzy love potion
These color altering love potions are incredible enjoyable. Using crimson cabbage indicator means the color of the potion modifications when an acid or alkali is added!
The potions beneath are made with crimson and pink meals colouring, baking soda, vinegar and crimson cabbage indicator.
Blow up a coronary heart
Attempt blowing up a balloon with a coronary heart drawn on it or perhaps a heart-shaped balloon utilizing the fizzy energy of an effervescent pill or baking soda and vinegar.
The response between the bubbling vitamin pill and water produces carbon dioxide fuel, which fills the jar after which the balloon, inflicting it to inflate.

Colored Valentine Flowers
Create fairly flowers to your Valentine with this tremendous easy transpiration experiment. All it’s good to do is purchase some white flowers and place them in a mix of meals colouring and water for a number of hours. The petals change color because the colored water travels up the stem into the petals!
Respiration Pizza
Does anybody need a heart-shaped pizza? This can be a nice exercise for studying about respiration as yeast is used to make the dough rise.

How briskly does your coronary heart beat?
Studying about coronary heart price and the way it modifications with train with a easy coronary heart price investigation.

The place is the guts?
Ask youngsters to attract round themselves on a big piece of paper and draw their coronary heart in the appropriate place.

Make your personal stethoscope
Make a stethoscope and hearken to a pal’s coronary heart beating. Spiderman dress-up is optionally available!

Pumping Coronary heart Mannequin
Older youngsters could make a intelligent pumping coronary heart mannequin. This can be a nice option to show how coronary heart valves work.
Valentine Sweet Science
Make a good looking colored coronary heart with skittles or M&Ms. Create a sample on a white plate or tray and pour heat water excessive. The color from the Skittles spreads into the water, giving a rainbow impact.
Or how about constructing a tower of sweet utilizing Valentine’s sweets and toothpicks?
Secret Valentine Messages
Ship a message with flowers
Write a message inside a paper flower, fold up the petals, after which place in water to observe the message seem.
Messages with lemon juice
Do you know you possibly can write secret messages with lemon or lime juice.
Scratch Artwork Photos
We had a variety of enjoyable making scratch artwork canvas footage. Oil pastels work rather well for this exercise, because the black oil pastel offers a thick coating that may be simply scratched off.
As soon as you’ve got made your secret message, create a supply system for it. This may very well be a paper aircraft, parachute, zip line or perhaps a motorised automobile.
Free Valentine’s Day Science Experiment Pack
Obtain my FREE Valentine’s Day science experiment pack! The pack consists of 4 science experiment directions, templates, and STEM problem playing cards!
- Blow up a coronary heart balloon
- Make Valentine spinners
- Magic opening flowers
- Straw rocket messages
Little Bins for Little Fingers has some attractive crystal hearts to make and a good looking coronary heart lava lamp.
Pink Ted Artwork has some sensible Valentine’s Day sources for lecturers and fogeys as nicely.
Do not forget to try my Valentine’s Day STEM challenges, too!
Do you’ve any extra Valentine’s Day Science concepts for us?
In case you did not discover what you have been on the lookout for right here, check out my different simple science experiments!
Final Up to date on July 9, 2025 by Emma Vanstone

