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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. |