Magical world of crazy science!

🍩Hello there Bloggers. There is this amazing person who came to visit our school. You know who it is? It's Richard and Robyn!! They do science experiments and magic tricks. It was so cool! They came to visit our school🏫, and showed us some crazy science. We learnt what chemistry was, chemistry is the study of chemicals. Chemicals power things like rockets. Chemical reactions happen when you mix 2 things or more together, and changes the state. Water is the only substance on earth that exists in liquid, solid and gas. We also learnt about physics. Richard got a hair dryer and a ping pong ball. he turned the hair dryer on and put the ball on top of it. The ball started to float. He told us that when there is fast moving air it goes up. Gravity pulls it down, that's why it stays in the middle, floating. he also did a little firework. He used some grain and fire. He put a tiny bit of the grain while the fire was on, and then there was this great amazing flame of fire! The rest will be in the videos:

 The science show was amazing! I learnt about chemistry and physics, and magic! I really want to learn how to do these things. If you have any questions, please tell me in the comments down below. Bye!
My questions now are:
How do people do magic?
Is science important for the world?
How can magicians do unpredictable things?
Are there still different types of bacteria's not known yet?
Can scientists change the world?