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9 Cards in this Set
- Front
- Back
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The Essential Elements Can Be Divided Into |
Wet Dry Hot Cold |
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The Nucleus of An Atom Contains What? |
Protons Neutrons |
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The Rings Around Around The Nucleus Contain What? |
Electrons |
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Who Created The First Table of Elements |
Mendeleev |
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How Many Elements Are On The Table Of Contents |
112 |
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What is Atomic Mass |
A whole number that is a equal to the number of neutrons and the number of protons in an atom |
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What is the Atomic Number |
The number of protons in the element |
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What is an Isotope |
An atom that has the same atomic number but a different atomic mass Contains the same number of protons but varying number of neutrons |
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When Does Radioactivity Occur? |
When a nucleus contains too many neutrons, the atom disintegrates radioactively, bringing the number of neutrons and protons to a stable state. |
