Dmitri Mendeleev
Dmitri Mendeleev was a very smart man who created a table that shows all the different elements that make up everything in the world, called the Periodic Table. It is like a big chart that organizes all the elements based on how heavy they are and how they like to react with other elements.
It's like putting all your toys in order from lightest to heaviest or putting all your blocks in one pile and all your toy cars in another pile. But instead of toys, he did it with chemical substances, which means different things that are used in science labs and in everyday life.
The Periodic Table helps scientists understand how different elements act and what they are made of. Plus, it makes it easy for people like us to learn about them too!
It's like putting all your toys in order from lightest to heaviest or putting all your blocks in one pile and all your toy cars in another pile. But instead of toys, he did it with chemical substances, which means different things that are used in science labs and in everyday life.
The Periodic Table helps scientists understand how different elements act and what they are made of. Plus, it makes it easy for people like us to learn about them too!