Magic Pepper and Soap Science Experiment for Kids

published on 19 August, 2024 at 21:00

The world of cooking is rich in science. With this super fun experiment to do with kids, you can also learn something incredible!

All you need to do is fill a plate with water and add some black pepper. After covering the entire surface, dip a finger in dish soap and touch the water. You will see the pepper immediately move away.

But why does it happen?

Water molecules attract each other, creating a thin layer known as surface tension, which is why the pepper does not dissolve. This is because it is very light and hydrophobic, meaning it repels water and floats.

Soap, on the other hand, has surfactant properties, which means it can lower this surface tension by breaking the attraction between water molecules. This is why the pepper moves to the edges of the plate, where the surface tension is still present.

Cookist 1.404 video • 10 photo

47.405.203 views

0:57 JAPANESE PANCAKES: the SECRET to make them EXTRA FLUFFY
1544 VIEWS
Cookist
1:05 SALT BREAD SHIO PAN: they're so CRUNCHY and full of BUTTER!
167 VIEWS
Cookist
0:35 You'll love this 2 INGREDIENTS CAKE!
3358 VIEWS
Cookist
1:22 12-TABLESPOON CAKE
28381 VIEWS
Cookist
1:02 ITALIAN BAKED EGGS (ENG)
5 VIEWS
Cookist
4:23 BOLOGNESE ragù: how to perfectly make this TRADITIONAL ITALIAN RECIPE
0 VIEWS
Cookist
0:48 Swirls with custard and raisins: SOFT and super DELICIOUS brioches!
200 VIEWS
Cookist
0:34 QUICK and FLUFFY LEMON FRITTERS! Ready in a FEW MINUTES
29051 VIEWS
Cookist
0:44 Let's make the CRAMIQUE at HOME: the famous GIANT CHOCOLATE CHIP BRIOCHE
7525 VIEWS
Cookist
0:49 THROAT SWEETS with HONEY and GINGER
828 VIEWS
Cookist
0:30 CHIA SEEDS CHEESECAKE! a LIGHT and DELICIOUS idea for your BREAKFAST!
32727 VIEWS
Cookist
4:02 All the TIPS for a PERFECT STEAK: extra TENDER and JUICY
2305 VIEWS
Cookist
1:29 Extra SOFT MEATBALLS: EASY and LIGHT, you WON'T have to FRY THEM!
7402 VIEWS
Cookist
0:37 How to reuse LEFTOVER EGG WHITES and make a DELICIOUS bundt cake 🍰
28548 VIEWS
Cookist
0:17 We tried the VIRAL JAPANESE CHEESECAKE
25430 VIEWS
Cookist
0:31 Use THIS MIX to LEVEL UP YOUR RECIPES! Try the italian SOFFRITTO and store it ALL YEAR LONG
24614 VIEWS
Cookist

)