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| The material that makes up a substance. |
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| A type of matter that has a fixed or definite compostition |
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| A oure substance that is composed of only one type of atom |
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| A pure substance with two or more different elements. |
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| Two or more atoms bonded together |
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| Same protons different neutrons |
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| The ionization energy for atoms is decreased as the period number? |
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| The ionization energy for atoms is increased as the group number? |
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| The atomic number is equal to the number of? |
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| The atomix mass number=number of____ plus number of____? |
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| Cretinism and Hypothyrodism can be caused by insufficent amount of? in your diet |
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| To move and electron to a higher energy level than it would normally ocuupy you must add? |
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Shell 1 Shell 2 Shell 3 Shell 4 |
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Shell 1 Shell 2 Shell 3 Shell 4 |
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| A horizontal row in the periodic table is called a? |
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| A vertical row in the periodic table is called a? |
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