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18 Cards in this Set
- Front
- Back
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An atom is composed of what 3 elementary particles? |
Proton, Neutrons, Electrons |
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What kind of charge does an electron have? |
Negative Charge |
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What kind of charge does a proton have? |
Positive Charge |
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What kind of charge does a neutron have? |
No Charge |
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Atomic Number |
Number of protons in the nucleus. |
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Isotopes |
Atoms of the same element having a different number of neutrons. |
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Mass Number |
The sum of the number of protons and neutrons in an atom. Because an atom is electrically neutral, the number of protons is equal to the number of electrons in it. |
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What are Valence Electrons |
Electron on the outside orbit of the nucleus |
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What force holds the nucleus together? |
The nucleus is a fundamental particle held together by the "strong force" |
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Are protons and neutrons fundamental particles, why? |
Protons and neutrons are NOT fundamental particles because they are composed of quarks. |
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Is an electron a fundamental particle, why? |
An electron is a fundamental particle because if you slice it open, it is only electron. |
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What force holds electrons in orbit around the nucleus? |
The "electro-weak force" |
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What does an atomic number tell us? |
The number of protons in an atom of a specific element. |
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What is Average Atomic Mass? |
A weighted average of all isotopes found abundant in nature. |
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Anion |
An ionic bond (in non-metals) in which electrons were GAINED into the valence shell to fill it up. (Ani - negative charge) |
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Cation |
An ionic bond (in metals) in which electrons were LOST from the valence shell to reveal the full shell hidden below (inside). |
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Ionic Bond |
Bond in which electrons are gained (anion) or lost (cation) |
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Covalent Bond |
Bond in which electrons are shared |
