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Atoms and Ptable
Atoms and the Periodic table
| Term | Definition |
|---|---|
| Anion | An atom that has more electrons than protons |
| JJ Thompson | the first person to show evidence of electrons |
| Metals | Most of the elements on the periodic table |
| Inert | Atoms that are resistant to change or reaction |
| Argon | The element that contains 18 protons 22 neutrons and 18 electrons |
| Proton | The positively charged subatomic particle |
| Valence shell | The outer ring from an electron cloud |
| Positive | The electrical charge of a Proton |
| Electron | The smallest of the three subatomic particles |
| Chlorine | An atom with three energy rings and 7 valence electrons |
| Negative | The electrical charge of an Electron |
| Isotopes | Atoms of the same element with different numbers of neutrons |
| Valence electrons | The dots on a Lewis dot structure represent these... |
| Valence | The chemical reactivity of an element is determined by its... |
| Bohr Model | The type of model used to show the location of atoms around the nucleus |
| Family | A column on the periodic table |
| Democritus | The Greek philosopher who was first to have the idea of the atom |
| Element | The simplest pure substance containing only one type of atom |
| Rutherford | The first person to show that atoms were mostly empty space |
| Alkali metals | The most reactive elements on the periodic table |
| Electron cloud | the area of the atom that fills the greatest amount of its volume |
| Noble Gasses | The chemical family with full valence shells |
| Malleable | The ability of metals to be hammered into thin sheets |
| Atoms | Small pieces that are the building blocks of all matter |
| Compound | Pure substance made of 2 or more different types of atoms chemically bonded. |
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coach_fletcher