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CP 3 Vocab
chapter 3 vocab
| Question | Answer |
|---|---|
| atom | small dense postive core (nucleus) surrounded by a large space of electrons |
| plum pudding model | a model where an atom is composed of electrons surrounded by a soup of positive charge to balance out the negative |
| gold foil experiment | experiment investigated the structure of an atom |
| orbitals | mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom |
| nucleus | contains protons and nuetrons |
| Protons | 1/1H or 1/1P, mass= 1amu, positive charge, in nucleus |
| electron | 0/-1e, negative charge, outside nucleus |
| neutron | 1/0n, mass= 1amu, no charge, in nucleus |
| mass number | sum of protons and neutrons |
| atomic number | number of protons in an atom |
| ion | non neutral, have gained or lost electrons |
| isotope | different types of atoms of the same element |
| atomic mass | The mass of an atom, listed in periodic table |
| valence electrons | The electrons in the outermost shell |
| octet | A set of eight valence electrons in an atom or ion, forming a stable configuration. |
| excited state | A stationary state of higher energy than the lowest stationary state |
| ionization energy | The energy needed to remove one or more electrons from a neutral atom to form a positively charged ion |
| electron affinity | positive when the resulting ion has a lower energy |
| electronegativity | a chemical property that describes the ability of an atom to attract electrons |
| alchemy | a medieval endeavor concerned with turning other metals to gold |
| cathode ray tube | a device that emits a beam of electrons |
| nucleon | any subatomic particle found in the atomic nucleus |
| Law of conservation of mass | states that there is no dectable change in the amount of mass present before and after a chemical reaction |
| Law of Definte proportions | states that the elements combine in specific mass ratos to form compounds |
Created by:
carmen9295
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