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13 Cards in this Set
- Front
- Back
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Atoms |
The building blocks of matter |
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Nucleas |
Located at the center of the atom |
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Protons |
Positively charged particles (p+) |
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Nuetrons |
Particles with no charge ( n0) |
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Electrons |
Negatively charged particled that are located outside the nucleus (e-) |
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Elements |
A pure substance that cannot be broken down into othet substances by physical or chemical means. |
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Isotopes |
Atoms of the same element that have different numbers of neutrons. |
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Compound |
A pure substance formed when two or more different elements combine. |
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Molecule |
A compound in which the atoms are held by covalent bond. |
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Ion |
An atom that has lost or gained one or more electron. |
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Covalent Bond |
The chemical bond that forms when electrons are shared. |
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Ionic bond |
An electrical attraction between two oppositely charged atoms or groups of atoms called ions. |
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Van der Waals Forces |
When attractive forces between positive and negative regions pull on the molecule and holds them together. |
