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ch16vocscience
| Question | Answer |
|---|---|
| Atom | is the smallest particle of an element that remains the element's properties. |
| Nucleus | the small positively charged center of the atom |
| Protons | Particles in the nucleus with an electrical charge of +1 |
| Neutrons | Electrically neutral particles in the nucleus |
| Electron | Particles with an electric charge of -1 |
| Quark | Scientist have inferred that protons and neutrons are composed of smaller particles |
| Electron Cloud | Area around the nucleus of an atom where electrons are most likely to be found |
| Atomic Number | Number of protons in an atom’s nucleus |
| Mass Number | Sum of the number of protons and neutrons in the nucleus of an atom |
| Isotopes | atoms of the same element that have different numbers of neutrons |
| Average Atomic Mass | Weighted average mass of all naturally occurring isotopes of an element according to their natural abundances |
| Periodic Table | Elements are arranged by increasing atomic number and by periodic changes in physical and chemical properties |
| Periods | Horizontal rows of elements on a periodic table |
| Groups | Vertical column in periodic table |
| Electron Dot Diagram | Uses the chemical symbol of an element surrounded by dots to represent the number of electrons in the outermost level |
Created by:
amgrace