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3
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a table organized into rows, called periods, and columns called groups.
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5
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a force of attraction that holds atoms together as a result of the rearrangement of electrons between them.
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6
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have negatively charge
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9
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these atoms are unlikely to lose or gain electrons or to share electrons with other atoms
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10
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these atoms can either lose or share electrons when they combine with other elements.
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11
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electrons that have the highest energy.
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14
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is the number of protons in each atom of the element
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1
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a substance that cannot be broken down into any other substances by physical or chemical mean.
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2
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this element is placed in group 1 in the periodic table because it has 1 valence electron but is considered to be a non-metal
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4
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includes the symbol for the element surrounded by dots.
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7
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have no electric charge
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8
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is the smallest particle that can still be considered an element
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12
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these atoms become stable when they gain or share enough electrons to have 8 valence electrons.
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13
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are positively charged
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15
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these atoms react by losing their valence electrons.
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