Term
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Definition
| protons, neutrons and electrons |
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Term
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Definition
| The building blocks of all matter. The basic particle from which all elements are made. |
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Definition
| The center of an atom containing protons and neutrons |
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Definition
| Subatomic particles carrying a positive charge |
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Term
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Definition
| Subatomic particles having no charge. |
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Term
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Definition
| Subatomic particles carrying a negative charge and located in the region surrounding the nucleus. |
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Definition
| Region of space surrounding the positively charged nucleus where electrons are located. |
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Definition
| The number of protons in the nucleus of an atom. |
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Definition
| Atoms of an element that have the same number of protons, but different numbers of neutrons |
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Term
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Definition
| An atom which has an equal number of positive protons and negative electrons. |
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Term
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Definition
| The sum of the protons and neutrons in the nucleus of an atom. It is the average atomic mass rounded. |
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Definition
| The average mass of all the isotopes of that element. |
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Term
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Definition
| A table of all the elements listed according to similar properties. |
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Term
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Definition
| The horizontal (side to side) elements of the periodic table. There are 7 rows. |
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Term
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Definition
| The vertical (up and down) columns of elements in the periodic table. There are 18 groups. |
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Term
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Definition
| One or two letters which is an abbreviation for an element. The first letter is always capitalized, but the second is never capitalized. |
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