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| the smallest portion of an element that maintains the characteristics of that element |
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| the center of an atom, contains protons and neutrons |
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Definition
- electrons ( negative charge)
- protons (positive charge)
- nuetrons (no charge)
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Definition
| the smallest particle of a substance that still retains the same characteristic properties of that substance |
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Definition
| atoms of the same element that vary in their number of neutrons. |
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| a list of the simplest known substances |
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| the number of protons in an atom |
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| all of the electron orbitals or paths put together. the number of electron shells corresponds to the element's row on the periodic table. the outter most shell is called the valence shell. |
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Definition
| is formed when one or more electrons are transferred from one atom to another |
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Definition
a positively or negatively charged atom
cation = positive
anion = negative |
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| is formed when electrons are shared between atoms |
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| the slight attraction that can develop between the oppositely charged regions of nearby molecules |
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Definition
- opposites charges attract
- like charges repel
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