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Displaying 12 Articles

Black-Marker Chromatography

A simple and visually impressive experiment reveals what a black marker’s color is really made of

calendar 21.3.2020
reading-time 5 minutes

Relight my Fire

Here’s a way to remotely light a candle that has just gone out, using the smoke rising from the wick.

calendar 21.3.2020
reading-time 3 minutes

Build Your Own Love Meter

The liquid rises as we think about someone we love

calendar 21.3.2020
reading-time 4 minutes

A Star of Toothpicks

Making self-forming stars using toothpicks – and what’s the connection to the Pharaohs?

calendar 21.3.2020
reading-time 3 minutes

How to Make Exploding Bags of Water

With materials found in any house, you can turn a regular bag into a “bomb” with a time-release mechanism

calendar 21.3.2020
reading-time 5 minutes

Making Butter from Cream

Butter shortage in the stores? Here’s how to make it at home

calendar 21.3.2020
reading-time 3 minutes

The Plumbers’ Secret Code

Write a secret message that only you can read, using just some magic tape

calendar 21.3.2020
reading-time 4 minutes

The Hard Boiled Dreidel

A festive experiment for Hanukkah, Passover, or anytime hard boiled eggs are on the menu

calendar 20.3.2020
reading-time 4 minutes

How Can We Make a Pine Cone Open and Close?

In this experiment, we’ll make a pine cone open and close as we wish. Equipment Pine cone

calendar 13.10.2014
reading-time 3 minutes

Preparing an Automatic Water Pump Out of Folding Straws

In this experiment, we’ll build a self-propagating water pump that sucks out water

calendar 14.6.2014
reading-time 3 minutes

Separating a Mixture of Salt and Pepper

In this experiment, we will accomplish the seemingly impossible feat of separating salt

calendar 7.6.2014
reading-time 3 minutes

Color-Changing Cabbage

In this experiment, we'll learn how to extract colorings from a red (purple) cabbage

calendar 3.5.2014
reading-time 2 minutes