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Periodic Table gabe
| Term | Definition |
|---|---|
| Periodic Table | a table illustrating the periodic system, in which the chemical elements, formerly arranged in the order of their atomic weights and now according to their atomic numbers |
| Element | cannot be separated into simpler substances by chemical means |
| Element Symbol | code for a chemical element |
| Atomic Number | the number of positive charges or protons in the nucleus of an atom of a given element |
| Atomic Mass | the mass of an atomic particle, sub-atomic particle, or molecule |
| Period | a length or portion of time. |
| Group | is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table |
| Family | is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table |
| Chemical Formula | a way of expressing information about the proportions of atoms that constitute a particular chemical compound |
| Metals | good electrical and thermal conductor |
| Nonmetals | element that doesn't have the characteristics of metal including the ability to conduct heat or electricity |
| Metaloids | properties are intermediate between those of metals and solid nonmetals |
| Noble Gasses | any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table |
| Reactivity | the relative capacity of an atom, molecule |
| Dmitri Mendejeev | Russian Chemist that helped develop the periodic law |
| Trend | provide chemists with an invaluable tool to quickly predict an element's properties |
| Energy level | fixed amount of energy |
| Valence Electrons | the electrons in the outer shell of an atom. The valence electrons are the ones involved in forming bonds to adjacent atoms |
| Chemical property | any of a material's properties that becomes evident during, or after, a chemical reaction |
| PysycalProperty | any property that is measurable, whose value describes a state of a physical system |
Created by:
GabStu2020
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