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quiz 1-chemistry
| Question | Answer |
|---|---|
| chemistry | the study of matter |
| atom | basic unit of matter |
| dalton | all elements are composed of invisible atoms all atoms of a given element are identical atoms of different elements are different(in mass) compounds are formed by the combination of atoms of different elements |
| electron | negatively charged particles |
| nuetron | neutrally charged particles |
| proton | positively charged particles |
| "plum pudding model" | the experiment where thompson discovered the electron |
| thomson | scientist who discovered the electron |
| bohr | discovered that the nucleas is made up of nuetrons & protons and electrons orbit them |
| rutherford | discovered that the atom has a nucleaus and its postitively charged and that the vomlume is mainly empty |
| wave-mechanical model | discovered that the electrons move in orbitals |
| greeks | discovered that matter is composed of tiny,discrete particles |
| amu | atomic mass unit |
| atomic number | the number of protons in the atom |
| elements | are substances that cant be broken down |
| compounds | composed of 2 or more elements that chemically combined |
| mixtures | combinations of 2 or more pure substances that can be separated by physical means |
Created by:
jriv