Science experiments are fun for all ages. Here are 10 amazing science experiments you can try at home!
5. 3D Printed Baby Universe
3D printing has some pretty amazing applications when it comes to science. There are a million and one cool science models that you can make at home with 3D printers, but one of the coolest is a 3D printed model of the Cosmic Microwave Background or the CMB. The cosmic microwave background is the oldest light in the universe, and it dates back to the very beginning of the universe. It first imprinted on the sky when the Universe was just 380,000 years old, which in cosmic years is nothing at all. It’s something that can still be observed today and the 3D model that you see was brought to scale be physicists at Imperial College London. Even if you don’t nerd out over this, then it’s still a pretty little model that would be fun to have around.
4. Extract Fluorescein
This chemical compound is one of the most fascinating on this list. It’s a powder that reacts to water and becomes bright green. It’s used by a lot of scientific disciplines including, biomedical research and medicine. It’s also employed by NASA to find downed air crafts. The chemical is so vibrant that it can be traced easily. If that bright fluorescent green looks familiar to you then congratulations, you can recognize a highlighter when you see one. Fluorescein is commonly used in regular school highlighters. This chemical is fun to mess with in water, particularly if you have a blacklight on hand. It will make you feel like you’re in a comic book working with some mad scientist trying to make the next Hulk. You can find the instructions for this experiment on youtube brought to you by NightHawkInLight.
3. Melting Gallium
Gallium is a metal that has a weirdly low melting point. Because of the metal’s melting point of just 85 degrees Fahrenheit, it’s enough to melt in your hand. Sure, it might take a while to melt the metal thoroughly, but it is possible with your body heat or mildly heated water. This experiment is one that’s fun and safe for all ages. The metal is safe to touch, but it’s still highly malleable in its melted form, which gives you the ability to shape this metal into pretty much anything that you want. This isn’t like liquid mercury that has a low melting point but is extremely toxic; gallium is safe to touch and play with. The possibilities are endless for this unique little metal. Gallium isn’t all that abundant, but you can find the metal online at stores like Amazon.
2. Homemade Invisible Ink
There are a lot of ways that you can make your own invisible ink. One way is with lemon juice but the way that won’t require a black light is with regular baking soda. Just mix the baking soda with some water and then use something to write with using the baking soda mixture like a cotton swab. When the paper is held up to light, the parts that have the baking soda mixture on it will react differently to the light than the paper that is untouched. Fun fact: some messengers during World War II used a similar method to send encrypted messages to each other, except instead of baking soda, they used their urine. You could do it that way too, but it would be a significantly more gross experiment, whatever floats your boat. Whatever method that you use, just makes sure that the person that you’re sending the message to knows that you’re not sending them a blank piece of paper.
There are a lot of ways to create this technicolor light show, but the ingredients are the same every time, fire plus chemical colorants equal colored fire. You can add the dyes to the log themselves, or you can soak objects in the chemicals so that you can throw things into the fire to produce the chemical change. A lot of the chemicals that are used to create the colors are things that you can find at the grocery store like table salt, Epsom salts, and borax, which is common in a lot of household cleaning supplies. The fire doesn’t need to be special but just make sure that this is an experiment that you’re doing outside in a safe environment.