CAS CH 102 Lecture Notes - Lecture 16: Cathode Ray Tube, Hydrogen Peroxide, Electron Configuration
Document Summary
Atoms can neither be created nor destroyed. All atoms of the same element are the same. Compounds are formed by combining different atoms. Concluded that atoms are hard indivisible sphere. States that matter can be neither created nor destroyed. Regardless of the amount, a pure compound always contains the same elements of the same proportion by mass. H20 2 hydrogen atoms + 1 oxygen atom = 2 grams of hydrogen + 16 grams of oxygen (molar mass of oxygen = 18 g). Ration = 2 grams : 16 grams . When one element combines with another to form more than one compound the mass ratio of the elements in the compounds are simple whole numbers of each other. 2 g : 16 g 2 g : 12 g g : 32 g. Performed an experiment with a cathode ray tube. Believed that an atom is a positive sphere with negative charges .
