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Chemistry Chapter 3!
chapter 3 vocab
| Question | Answer |
|---|---|
| atom | smallest object that retains properties of an element |
| Plum-Pudding Model | each atom was a sphere filled with a positively charged fluid and electrons |
| Gold-Foil Experiment | experiment to probe the structure of the atom |
| Orbitals | an energy state in the atomic model which describes where an electron will likely be |
| nucleus | central part of an atom that contains the protons and neutrons |
| proton | particle found in a nucleus with a positive charge |
| electron | one of parts of the atom having a negative charge |
| neutron | particle found in the nucleus of an atom |
| mass number | the sum of protons and neutrons |
| atomic number | the number of protons in an atom |
| ion | removing or adding electrons to an atom creates an ion (a charged object very similiar to an atom) |
| isotope | element with the same number of protons but have different numbers of neutrons |
| atomic mass | the mass of a specific isotope of a given atom |
| valence electrons | the electrons in the outermost shell of an atom |
| octet | group of eight valence electrons surrounding an atom |
| excited state | state in which an atom or molecule picks up outside energy |
| ionization energy | energy required to remove an electron from a specific atom |
| electron affinity | the energy change that occurs when an electron is added to a gaseous atom |
| electronegativity | measure of a substances' ability to attract electrons |
Created by:
janthony1
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