click below
click below
Normal Size Small Size show me how
atomic theory123
| Question | Answer |
|---|---|
| law of definite proportions | a chemical compound always contains the same elements in the same ratio. |
| law of conservation of mass | mass cant be created or destroyed |
| law of multiple proportions | when 2 elements combine to form two or more compounds, the mass of one element that combines with a given mass of the other is in the ratio of small whole numbers |
| rutherfords model | nucleus protons neutrons |
| bohrs model | electrons in electron cloud |
| volume in atom | in electron cloud |
| mass in atom | in nucleus |
| what keeps the nucleus together | a strong force |
| 02 vs 03 | isotopes and multiple proportion |
| mass of nuetron is the same as mass of | protons |
| electron charge | negative outside nucleus |
| proton charge | positive, inside nucleus |
| neutron | no charge, inside nucleus |
| daltons theory #1 | 1. all matter is composed of atoms |
| daltons theory #2 | 2.atoms are of the same element are indentical in their properties |
| daltons theory #3 | 3. atoms of different elements differ in properties |
| daltons theory #4 | diff. elements combine to form compounds |
| daltons theory #5 | chemical reactions, they are combined, seperated, rearranged but never created destroyed or changed |
| what did the foil experiment discover | dense nucleus |
| what did the ray tube discover | electrons |
| frequency of wave lengths in electro magnet radiation | electro magnet spectrum |