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Chapter 17 Vocab
Chapter 17 Vocabulary
| Term | Definition |
|---|---|
| Atom | the smallest particle of an element that still retains the properties of the element |
| Atomic Number | number of protons in an atom's nucleus |
| Average Atomic Mass | weighted-average mass of the mixture of an element's isotopes |
| Electrons | particles surrounding the center of an atom that have a charge of 1- |
| Electron Cloud | area around the nucleus of an atom where the atom's electrons are most likely to be found |
| Electron Dot Diagram | uses the symbol for an element and dots representing the number of electrons in the element's outer energy level |
| Group | vertical column in the periodic table |
| Isotope | atoms of the same element that have different numbers of neutrons |
| Mass Number | sum of the number of protons and neutrons in an atom's nucleus |
| Neutron | neutral particle, composed of quarks, inside the nucleus of an atom |
| Nucleus | positively charged center of an atom that contains protons and neutrons and is surrounded by a cloud of electrons |
| Period | horizontal row in the periodic table |
| Periodic Table | organized list of all the elements that are arranged by increasing atomic number and by changes in chemical and physical properties |
| Proton | particles composed of quarks inside the nucleus of an atom that has a charge of 1+ |
| Quark | particles of matter that make up protons and neutrons |
Created by:
John Campbell
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