Who was the scientist classified elements into four categories gases metals nonmetals and earths?

Why is iron worth mining? How shiny id talc? What happens to the mean free path of the molecules in this process if a helium filled balloon initially at room temperature is placed in a freezer will its volume increase decrease or remain the same? What is one of two elements that startwith an A used for jewelry? What is a large mass of closely packed leaf like bundles of nerves cells? What is the role of interneurons in maintaining homeostasis? What are facts about Commet Halley? What is the structural formula for diethyl ether? Why are gases often times stored away heated pipelines? A chemical compound containing three double bonds? Is copper harder than mica in a commutator? Why is the mass of a bowling ball the same on earth and on the moon but the weight of the bowling ball on earth different on the moon? What is mars and Uranus worth? How does the ideal image of a woman's body differ in other cultures? What is another name for a deep gorge? What are organisms what are living factors that influence an organism? What do Ned Land Aronnax and Conseil find as they climb the walls of the volcano? How do you reverse single phase motor? How would you use a electromagnet to move a slide latch in a lock? What are some extreme weather occurrences in the great plains?

Who was the scientist classified elements into four categories gases metals nonmetals and earths?