WebHis results gave the first experimental evidence that matter is made up of atoms. D. His results gave the first evidence that atoms were made up of smaller particles. D. His results gave the first evidence that atoms were made up of smaller particles. A cathode ray tube is made of glass with a small amount of some kind of gas in it. WebLeucippus and Democritus were Greek philosophers who are credited with coming up with the theory of atomism. This theory stated that everything is made up of tiny, indivisible particles called atoms. Although they had similar ideas, it is believed that Democritus was the one who first came up with the term “atom.”
Atomic Theory Flashcards Quizlet
WebHis results gave the first evidence that atoms were made up of smaller particles. A cathode ray tube is made of glass with a small amount of some kind of gas in it. It has metal … Web6. apr 2024 · The model described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance, much like planets revolving around the Sun. Rutherford gold-foil experiment brickhouse farm holiday cottages
2.1: Atoms - Ideas from the Ancient Greeks - Chemistry LibreTexts
Web9. jan 2014 · At that time, the Universe was made out of about 92% hydrogen atoms and 8% helium atoms by number (or about 75-76% hydrogen and 24-25% helium by mass), with trace amounts of lithium and... Web14. sep 2024 · The first scientist to show that atoms emit tiny negative particles was J. J. Thomson. Advertisement Advertisement New questions in Chemistry. What mass of aluminium oxide is produced when 9.2 g of aluminium reacts with oxygen? Propane burns completely in oxygen according to the equation shown. C3H8 (g)+50₂ (g)=3CO₂ … WebDalton thought that atoms were the smallest units of matter - − tiny, hard spheres that could not be broken down any further. This assumption persisted until experiments in physics … cover virginia medicaid team first