Interesting science: 20 magical little science tricks, I was blown away when I saw second

1. Refractory ball

Water can absorb heat from fire, and rubber doesn't break. However, if thermal energy absorbed by water in balloon is exceeded, balloon will also explode.

2. The laser flows into hand through water

Refraction of water

Safety tips. When using a laser pointer, be careful not to look directly at it to avoid damaging your eyesight.

After using laser pointer, keep it out of reach of children.

3. Reflective Toner

Tonic ingredients fluoresce when exposed to ultraviolet light.

4. Make anti-gravity water

The surface tension of water acts on mesh, creating a "membrane" that creates a seal. When toothpick is stuck in, water will surround toothpick, but because toothpick can penetrate water and has a relatively low density, it will float to top.

5. Instant Freeze Method

Water normally freezes at freezing point (0 degrees), but pure water is free of impurities and cannot stick and condense into ice. At this time, if a molecular collision is caused by vibration or it is poured directly onto ice, pure water already below freezing point will condense into ice.

6. Finger magic

A bowl of clean water, sprinkle with pepper noodles, dip your finger in water, nothing changes. This time put soap on your hands and this time watch magic of your fingers!

7. Left or right?

Note that black tip on pure white background is clearly pointing to left. How about putting it in a glass of water? Is it on left or on right?

8. A mobile whiteboard that was cleared in one second

The cocktail and water fall together, with a map in between, leaving a small gap. Look again after 10 minutes and cocktail that was originally in bottom glass has moved to top glass.

9. Point water at ice

Chill pure water just above freezing, then quickly tap or add an ice cube and water will freeze right before your eyes.

10. Preparation of fluorescein

Luciferin is a non-toxic powder in a marker pen that turns into a charming fluorescent green when in contact with water. NASA is using this chemical agent to help find a space shuttle that crashed into the ocean.

11. Metals that can be melted and shaped at room temperature

Gallium is a very strange metal with a melting point of only 29.7 degrees. So any cup of hot water can be used as a furnace, which can then be cooled to shape that metal into any shape you want.

12. Ferrofluid production

Ferrofluid is a liquid containing tiny magnetic particles, supplemented with oil, carbon powder and a magnet. You can create ferrofluid to control magnetism.

13. Make glass invisible

When light passes from one object to another, it changes speed and direction due to refraction. Objects are only visible when they reflect light. Therefore, when two substances with same reflective properties, such as vegetable oil and pyrex glass (heat-resistant glass), are together, light can pass directly through oil. The test tube becomes invisible.

14. Let liquid dance

Oubleck is a non-Newtonian fluid (a thick mixture of corn starch and water) that is not easily separated into a solid or liquid. Place a sound source, such as a subwoofer, on ooblek and it will be able to dance.

15. Make quick ice sculptures

The hand warmer contains a chemical called sodium acetate, which is liquid at first but turns into hot ice when processed. Throw in some arts and crafts and you can create stunning ice sculptures in no time.

16. Use spaghetti like a rocket engine

Missile technology is very simple, at least in some respects. A hybrid rocket engine powered by solid fuel (pasta) and liquid boosters (mouthwash and yeast), this homemade engine doesn't propel a rocket, but it's a great experiment.

17. Making waterproof sand

Combining sand with water-repellent chemicals results in water-resistant oil clean-up sand. In contact with water, this sand remains dry and can even be recycled.

18. Make a magical potato slime

This magical slime is actually starch, which is found in abundance in our food. This non-Newtonian fluid is as difficult to handle as pizza dough, but it turns into a liquid when left alone.

19. Turn milk into a work of art

Mix dish soap, milk, and artificial color and surface tension of milk will disappear, resulting in this exciting chemical reaction.

20. Release energy of candy

Have you ever wondered why kids jump up and down after eating candy? Because candy contains a staggering amount of chemical energy. Place a jelly bean in a test tube and add a few grams of potassium chlorate to catalyze a chemical reaction that releases energy. This can scare kids and make them stop eating candy...