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| Question | Answer |
|---|---|
| Regions in an atom where electrons are found are called ______ levels | Energy |
| The smallest particle of an element that still retains the properties of that element | Atom |
| The number of protons in an atom's nucleus is the atomic | Number |
| an organized list of all known elements is the ______ table | Periodic |
| Negatively charged subatomic particles are known as _______ | Electrons |
| An abbreviated name given to an element | Symbol |
| the element with 40 protons | Zirconium |
| a substance with atoms that are all alike is an ________ | Element |
| Horizontal row in the periodic table | Period |
| the symbol for the atomic number 92 | Uranium |