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Chemistry Vocab
Science Vocab
| Term | Definition |
|---|---|
| Atomic Mass | The average mass of one atom of an element |
| Alloy | a metal made by combining two or more metallic elements |
| Alkali Metals | very reactive metals. They occupy group IA of the periodic table. |
| Alkaline earth metals | This metal has there outermost electron in an s-orbital |
| Atomic mass unit(amu) | a unit of mass used to express atomic and molecule weight. |
| Atomic Number | the number of protons in the nucleus of the atom. |
| Actinide | any of the series of the 15 metallic elements from actinium |
| Corrosion | the process pf corroding metal stone or other materials. |
| Conductor | a material through which electric can pass |
| Chemical symbol | a code for a chemical element. |
| Ductile | able to be deformed with losing toughness;pliable, not brittle |
| Diatomic molecule | composed of only two atoms of either the same or different chemical elements. |
| Electron | a stable subatomic particle with a charge of negative electricity |
| family | a group of chemicals on the periodic table |
| group | same as family |
| Halogen family | exist in the free state normally as diatomic molecules |
| Metalloid | an element whose properties are intermediate between those of metals and solid nonmentals. (semi conductor) |
| Magnetic | capable of being attracted by or acquiring the properties of a magnet |
| Malleable | able to be hammered or pressed permanently out of shape without breaking or cracking. |
| Nonmetal | an element or substance that is not metal |
| Noble gas | not reactive |
| Nucleus | the central and most important part of an object |
| Nuclear fusion | a nucleus reaction in which atomic nuclei of low atomic fuse to form a heavier nuecleus with the release of energy. |
| Neutron | a subatomic particle of about the same mass as a proton but without an electric charge |
| Periodic Table | a table of chemical elements |
| Proton | a stable subatomic particle occurring in all atomic nuclei |
| Plasma | an ionized gas consisting of positive ions and free electrons |
| Period | a name given to a horizontal row of the periodic table |
| Reactivity | the state or power of being reactive |
| Semicounductor | a solid substance that has a conductivity between that of an insulator and that of most metals |
| Supernova | a star that suddenly increased gently in brightness because of a catastrophic explosion. |
| Transition metal | strong tendency to form coordination compounds and many of them are colored |
| Valence electron | associated with an atom. Can participate in the formation of a chemical bond. |
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