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psychical
| Question | Answer |
|---|---|
| electron | a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids. |
| valence shell | valence electron. An electron in one of the outer shells of an atom that can participate in forming chemical bonds with other atoms. |
| valence electron | In chemistry, a valence electron is an electron that is associated with an atom, and that can participate in the formation of a chemical bond. |
| chemical bond | physical restraints used to hold someone or something prisoner, especially ropes or chains. |
| ionic bond | An ionic bond is the bonding between a non-metal and a metal, that occurs when charged atoms . |
| covalent bond | A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. |
| metal | a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity (e.g., iron, gold, silver, copper, and aluminum, and alloys such as brass and steel). |
| non metal | a element or thing that is not metal . |
| metalloid | an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors. |
| halogens | ny of the elements fluorine, chlorine, bromine, iodine, and astatine |
| periodic table | a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns. |